All work can certainly be fulfilling, but more because of the reasons I described (it's a means to an end) than the reasons you're describing. Certainly, people shouldn't be forced to take particularly degrading jobs when they don't want to in order to survive. But do they find it degrading, or do you? Those are two very different things.

It's impossible that there are enough people in the world passionate about garbage collection -- allocated perfectly across the correct geographic regions, mind you -- to fill all of the available positions.