I like to think I am pretty engaged and self-propelled, but it doesn't surprise me that most people aren't interested in working. It would be a miracle if all work required for society just so happened to line up with all the passions of the workers.
That's why we get paid after all. I really enjoy my job and I'm effective, but if I didn't need money, it's not so fun that I wouldn't drop it to do other stuff I find more rewarding.
We aren't built for this either, especially not thought work. Society compells it, which is what it is, but we are not evolved for an 8 hour day of thinking at a desk.
Some people are good at it, but we are asking far more than some people to do it, and you have to do -something- to survive, and the outcome is obvious from thay lens in my opinion.