Yes, cats are MUCH easier to take care of. Yes, cats can and do help themselves compared to dogs. BUT Cats can become depressed when left alone all day or w/little to no interaction. They're people lovers, most of them anyway, and do need play time. Consider adopting 2 siblings or cats that may be 'friends' already. They need interaction and love. They're also nocturnal so they may stay awake at night and keep you up too. Also, they may want a belly rub so give them a belly rub or maybe a gentle pat on the head or scratch under it's neck...they LOVE that... but when they want to you to stop, they may nip at you or swat at you. They're just telling you, hey, enough w/the petting for now. If you don't stop, they may bite or actually scratch you next time. OR sometimes they DON'T want you to stop and may accidentally scratch you when they grab for your hand to 'put it back'. In that case they're saying "HEY, don't stop, I like that!" Just remember though, cats don't like aggressive petting or roughness like a dog might like. Cats are gentile creatures & need different type of handling. Consider a "Catio"...an outdoor space that's protected but allows them some outside leisure. They do tend to get bored sometimes and want to go outside sometimes so this may help.
If you do hafta leave kitty alone for more than a day, let's say a weekend trip, leave enough food & water out for that duration and be sure to clean the litter box before you leave Or for more than 3 days, I'd ask a trusted friend to look in on kitty or find a reputable kennel that deals w/cats. They can be good alone for a weekend trip but if it's more than 3 days, I'd ask for help.
As far as care, some cats don't mind getting a bath but most do NOT like it. They keep pretty clean themselves b/c they groom themselves. The only reason you may need to bathe a cat is if it's unable to groom itself or got into something you can't brush out..like motor oil or soap, etc or if they have horrendous flea infestation in which case you need to go to the vet for treatment. That's the best thing you can do... My Siamese cat did not mind it at all when I gave her a bath but my Siamese mix and other cats I had HATE/HATED baths. Our current kitty had to be bathed regularly b/c she was a stray & apparently got hit by a car so she was unable to groom herself properly & her tail is paralyzed so she can't groom it. We ended up w/a HORRIBLE flea infestation from being out in the country (she was an indoor cat at that point) and b/c fleas eat blood, their excrement is blood. She'd get ate up by fleas ALL the time and her fur would be encrusted w/blood and so would her tail so we had to bathe her all the time to get that out. Now we live more in town & fleas are gone and we don't bathe her as often. Maybe a couple times a year if her fur gets oily from not being able to groom herself.
If you DO have to bathe your kitty, use luke-warm water. Have soap & large towel ready for use, have the water on BEFORE you bring kitty in otherwise it'll startle kitty when you turn the water on. It's also best to use a detachable shower head or one you can attach to the downspout of the tub. You may wanna wear thick work gloves if kitty has claws, it can get bloody! Also, talk to kitty in a gentle, soothing voice. Don't force kitty or be mean to it...it just makes things worse. It's also easier w/2 people...one to hold kitty & bathe it and the other person can put the soap on. My husband holds the cat by all four legs & that seems to work so try that & see if it helps! Once kitty is bathed, immediately wrap it in the towel and help dry the fur...like you would your hair when you finish showering. Kitty can also finish drying off itself too but I'd at least give it a good rub-down before letting it loose. OR you could try an experienced groomer who has a lot of experience w/cats. Perhaps your vet may have suggestions on who they'd recommend for a groomer.
As for litter, we've been using the self-sifting litter box bags which keeps down the amount of scooping we have to do. For a new cat, I always take kitty & show it the litter box, I usually put kitty in it & move the paws in a digging motion to 'show' this is the litter box, it seems to help. Also, be sure to get a scratching post or cat tree they can claw. Same w/the litter box, I take the cat over to the scratching post & press their paws til the claws come out & make the 'scratching motion' on the post w/their paws & claws out. You may hafta do that a few times. If you catch kitty clawing the furniture, immediately take kitty over to the post & do the motion again. Eventually they'll understand. Otherwise, you may need the plastic claw caps or spray w/water bottle & say a firm "NO!" That can work as well.
Cats can also get upset tummies too so stick with the same types of food like, for instance, my kitty can only eat canned food so I may feed kitty chicken flavor for a couple of days then change to chicken and liver for a couple of days then turkey for a couple of days then maybe turkey and giblets then maybe beef & chicken then beef then reverse the order starting w/chicken & beef, going backwards til I get to chicken again then maybe I'll change to chicken & tuna, then tuna, then tuna & mackerel, etc...you get the idea. The idea behind this is that it gives their tummies time to adjust. If you just go from, let's say, chicken to beef...those are 2 different things, beef tends to be richer compared to chicken so it may give kitty diarrhea or make it vomit....especially the canned food w/sauce or gravy can upset their tummies too b/c it may be too rich for them. Also, cats are meat eaters, NOT vegetarians. There's a lot of new foods that contain vegetables, I'd avoid those.
If you feed kitty dry food (aka "kibble"), stick w/the same brand. If you DO change brands, mix the new brand a little at a time w/the current brand to give kitty time to adjust. Same w/litter. Change litter brands or type?? Mix new litter a little at a time w/current type so kitty gets used to it. Cats can be VERY picky...you'd be surprised. If kitty truly does not like a flavor or food, switch...change it...find out what it will eat then stick to it, same w/litter.
When you bring kitty home, give it a few days to adjust. It may run & hide somewhere til they get comfortable w/the new surroundings. They may avoid eating during that time too. Some cats can be okay w/new environments but mine always took a few days to adjust. Eventually they usually come around, just be patient, leave them alone but still talk to them, interact w/them but just be prepared if they don't feel like playing for a few days.
Most importantly, if you have young kids...if you haven't already, please help them understand that cats are NOT dolls to be rough handled and tossed up in the air or having their tails & ears pulled. Cats do NOT like this. If you do have young kids, maybe an adult cat would be a better choice as a suggestion.
As someone else suggested, look up different breed personalities. I personally LOVE Siamese cats but they can be a handful sometimes. They're VERY vocal and LOUD when they meow. They also can require a lot of attention BUT can be VERY smart & easy to train. They're also beautiful too, that's just an example. Some cats are quiet, some are playful, etc. Also, yes, as someone said, opposite genders are best. I once made the mistake of getting an additional female cat for my Siamese to have a companion...you'd have thought I started WWII ! The new cat kept attacking my other cat so I had to take her back to the shelter. So yes, male cats w/female cats options are best IMO. Definitely make sure the cat is spayed or neutered. This will help w/spraying and also male cats who are not neutered tend to wanna run off from what I've seen & read. I too am against declawing but If kitty has already been declawed then always keep it inside (unless you have a catio). Otherwise it won't be able to defend itself if it does get out. You can always buy cat scratchers and claw caps, etc.
Hope you find my info helpful. I've had cats all my life & LOVE them! I understand them a lot better than dogs. If you have any further questions, feel free to send me a message. I'll do my best to try and help you. I'm not expert by any means but I can try to help you in any way I can. :) Good luck!!