Surprisingly, a not so tiny portion of the friends I made in my teenage years/early 20s, and who went on to be financially successful, happen to be psychologica

Surprisingly, a not so tiny portion of the friends I made in my teenage years/early 20s, and who went on to be financially successful, happen to be psychologically unfulfilled if not distraught. And they mostly subscribe to FIRE and some variants of the pseudoscientific idea of quantum suicide. In their terms: that they can't die because they're living their statistically best-of life; that, if they last long enough on this earth, they will likely get to see immortality, and have the mean to opt in -- buy in -- the forever train. It's representative enough (in my circle of friends/acquaintances) that I think about it a lot, how this way of thinking -- hating your life but thinking you're vesting into a dream that cannot not happen -- is impacting their future prospects, and their ethics. I don't have answers here; I am just perplexed.