[Ericson2314]

I'm not sure that's true, but even if it is, it is a sort of bipolar mix insecurity with hope and excitement.

The mid-life crisis insecurity doesn't have the hope and the rush in the same way. It has a lot more dread and angst.

[jrowen]

The realization that you achieved as much as one could hope to achieve and you still didn't find contentment.

That's honestly, to me, the saddest thing about the mega-rich. They don't know when, or how, to stop. There's no goal state where they can say "ok I made it, I can turn it off and enjoy life now, or at least stop fighting tooth and nail to hoard even more bigger numbers."