Most people don't have "fulfilling" jobs. They have a paycheck. A very small percentage of Americans, let alone those around the world, have the privilege of analyzing how their job makes them feel. I get paid great money to play with computers. My father was an elementary school janitor.
If you paid me the same to be a janitor, I'd take that trade any day of the week. I've been a janitor before and while the job is not fun and has some shitty (pun intended) days - overall I was a better human being not being stuck behind a desk for 10+ hours a day.
Unfortunately our economy is what it is, so you can only really be paid for non-physical work these days. Thus a lot of folks who are doing quite well on paper are struggling internally living a life that simply does not suit them.
It's weird to live your entire life knowing you were not built to do what you do day in and day out to pay the bills.
Gilded cages are rampant in our industry.