I tender an additional item for your consideration. While many people have 'JOBs', others have careers. Meaningful work can be part of what makes life worth living. I'm just saying that there may be additional considerations more important than simply hitting the 'fuck you money' threshold.
(SNIP)
Sure, of course, there are other factors, too, but sooner or later, you are going to hit a kind of threshold that it does not make any sense to keep working.
Well, it depends. Imagine working to build schools for the unschooled in unlucky parts of our planet. Or developing drugs that can save lives. Or assessing wannabe porn stars. It's not only about the money.