Okay so we all know men are different... they communicate different too...but the bottom line is... you are hurting and you feel neglected....and these are VALID feelings you have.
AND the BIG difference here is: you are not dealing with a 'normal' man... you are dealing with an "ADDICT." Thus, it would probably be a great benefit to you (although not easy nor a 'cure') but it would possibly help you to understand what an addict is and how their whole mentality/emotionality is different and they are not capable of many things... for now, or until they are really rehabilitated. But, addiction is a LIFE-LONG journey...
But please, your Husband has a problem, an illness, an addiction... and so you cannot expect "normal" things out of this man... he is one of those "emotionally unavailable" individuals... and it does not come naturally to him. And some people just don't know 'how" to have feelings, much less how to express them in a "healthy" way. And it cannot be forced out of them... they simply 'cannot' do it. It is nothing personal.. .but they have an addiction/problem and they don't have the inner or mental resources to do so... right now, or ever.
It must be very difficult for him.
BUT, you must take care of yourself too... do not rely on him for "validation" or for warm & fuzzy demonstrative expressions. It will not be possible, maybe for awhile.
Back in college, I dated a guy that was going to AA. (I didn't find out until a few months after), but What a doozy. I thought I could "save" him. What a crock. I learned, that you cannot 'make' someone love you or express that to you or even to do it out of guilt or what have you. I also learned that you simply cannot "expect" something from someone who is incapable of loving/giving/being honest/being genuine... or being a "good" partner.
The person has a problem... it is hard for them. But they have to get their act together... and it is a LONG journey and LONG road to walk... and they will do it or not.
You need to try and be impartial... but how can a spouse do so? Well, that is the conundrum.
One thing is to try and not have "expectations" on him... because he will not or cannot fit into the mold that you HOPE he will. He is not capable of that.
But then that leaves the partner emotionally barren... and I sincerely understand how you feel.... it is very sad, profoundly sad.
All the "Hallmark" card sayings will not help. It has to come from you to feel better... within you to feel better IN SPITE of him... despite him... despite his illness/addiction.
Don't rely on him to make you feel better... or you will be disappointed as you currently are... and it will make you even more depressed.
I know, most humans cannot attain happiness without the love and kisses and hugs from their beloved one... it's only normal.
Perhaps, going to JOINT Therapy together... might be helpful... so that you both can get on the same page at some point? Or as Deanna Leigh said... YOU can go to Al-Anon support groups too... so you can understand the mental/emotional dynamics of people with addictions/illnesses. Its worth a shot...
All the best,
Susan