I think you can live two kinds of life. One where your job is your passion, and takes over your life. A lot of startup folk are in this bracket. I'd argue that if you aren't, then you shouldn't be doing a startup.
On the other side, people work to earn the money they need to pursue the interests outside of work. I really don't think there's anything wrong with that, and it annoys me when people in communities like HN get snobby about it. The garbage worker is even getting a physical workout every shift- meanwhile, the rest of us slowly get less fit sat at a desk, and end up sacrificing our free time to go to the gym.