I agree with you. But not everyone will. Some people have jobs to pay for their lives outside of work, and that's it. And that's fine.
I take the stance of, the job I do for 8 hours 5 days a week might as well be something I actually enjoy doing above and beyond the financial incentive. Working on something I think is really neat is enjoyable, and I'm lucky to work in an industry doing things not so far from what I would spend my time doing anyway if I were retired.