The good thing about helpin people is that they hardly ever forget good deeds, and you can leave a huge impression by doing it.
I don't think I'd want to stay with the family for long after high school. Though that isn't to say I don't like them (I actually would do a lot for them). It is just that I do a lot around the house, and my siblings are completely reliant on me (Even my freshman brother, who can't even make dinner =.=). Luckily I am also the most autonomous family member, and the only one who can be left alone for longer than a day.