I mean, the answer is agency. You enjoy doing things that you choose to do—which you choose to do because you enjoy them, it’s just a tad selective and cyclic there.
Most people don’t choose to work because they enjoy it; they work to survive, doing what the market will support.
Some few very very lucky people get to do work they would otherwise choose to do anyways.
The cross section of companies willing to pay poverty wages and companies ok with/happy to make your life suck all day is depressing but not surprising.