Having kids is a lot of responsibility and certainly costly; that said, it's all worth it from my stand point.
Your kids must not be that old.
Seriously though, my kids are finally starting to do stuff/get stuff by themselves. Though, it's actually more like them demanding to do it themselves, like:
Son: "Daddy, I'm getting the milk BY MYSELF! Now get away from me."
Me: "Okay, just be careful."
Son: "Ok-aaaaay [eye roll]."
[two minutes later]
Son: "Daddy, someone spilled the milk. I'm going in the living room, now clean up that milk."
Yes, he's only 6 and he's already mastered the art of the "eye roll" and "the look." Though, it did take him 3 yrs longer than my 2 yr old daughter.
Every time they do things by themselves, I'm thinking "I should get the video camera 'cause this is either gonna hurt or be hilarious."