^^^I think it differs by family. My family is definitely very American but they fully support me and said they will continue to help unless they are no longer able to. I work for spending money and try not to ask for extra money. They pay everything, though I don't have any school bills because of scholarships. I even get a kick back each semester

I would have no problems with them moving in with me when they're older and needed care. I'm super close with my parents and still go home a lot. When I don't have to be on campus I typically pack up the cat and head home for a week or weekend or month until I need to be back near campus. I'm also an only child, still go home all the time for dinner when at the barn, and call them about 8 times a day (whenever I hear something interesting or need advice when the washing machine is screaming at me

) I may even move home for student teaching depending on where I get placed.
ETA: I'm not saying one way is right and one is wrong. BF has been raised exactly opposite how I have been but I think both of us have turned out to be strong people. We both have good leadership positions in our chapter and both do well in school. Only time will tell if we are both successful, of course but I think there is more than one way to get at the same results