That's easy, and nothing to do with the job per se

Two simple reasons. 1) When I was starting out all I wanted in life was to see the world and fly big planes. Having now seen a ballet at the Bolshoi, walked the stairs in Hong Kong, tasted steak in Argentina, and seen a Green Flash at sunset in Hawaii, I'm done seeing the world and would rather spend time walking my dogs in the woods, and 2) I've been incredibly fortunate in love and finance having kept the same wife for 30 years, and so I fully expect to be able to earn more off my retirement 401k and my wife's 401k then I could by continuing to work past age 60. Plus it's my wife's turn to pick some travel destinations that we can get to in a paid First Class seat and hang out for a few weeks.

That's what you get if you plan ahead, enjoy what you have today, and live within your means

Just to keep some semblance of staying on track. My point to the OP was merely to reinforce the point made earlier. Any estimator out there today is essentially worthless when looking beyond a year or two so go with what you prefer and enjoy the ride whatever that "ride" may be!