I disagree. I clean my home because I like it that way. I work better in a clean, organized environment. I exercise because it makes me feel better and stronger, and is just a good idea for long-term health. I work on personal projects because I want the results of those projects to exist. About the only thing I do for other people is my actual job, which pays the bills for the larger home and more involved lifestyle that comes along with a wife and children. (Well, I guess the whole raising of children and participating in a marriage is done for other people. And charity work. But hopefully you get the larger point.)