I am so with you on this.
Being 45, and raised in another era, I managed to make it through childhood into successful adulthood without rewards. The rewards were inherent - praise from my parents, a sense of self satisfaction and achievement, the reward of being a contributing member of my family. I did not get prizes, or stickers, or stars, or even allowance for the "chores" that I did.
And neither does my son. He gets my praise, I say "Thank You", but I do not, and have never, given him prizes or money for his contributions to the household. Since he turned 14 I have begun giving him a flat fee per month that he can use for anything from extra lunch at school, to ice cream, to toys, and special events. But it is not tied to his household responsibilities. He gets it regardless.
I think the assumption of responsibilities is us, as parents, teaching our children how to be successful adults. Let's face it, when we join the adult world, with all its responsibilities, we do not get stars and stickers for going to work and paying taxes. To teach them that they will be rewarded for everything they do, especially those things they have to do, sets them up for disappointment when they realize the real world just doesn't work that way.
But gosh, sometimes I really would like a gold star or a smiley face sticker for paying my taxes!!