My long-ago best friend's brother whom I never met committed suicide. He was a troubled genius she told me. Had problems with alsohol and drugs and finally ended his life.
Geniuses are not all alike. Some function at very high levels and live comparatively "normal" lives. Others are not so fortunate. I'm not sure why since I'm not among them but I suspect it gets very wearisome engaging with those who your intellectual inferiors who think they know everything when they know nothing. I don't know but unless they can find others on their level to interact with it would be a very lonely life.
Genius ain't always what you'd think it is. Sometimes they have to pay a price for it. No one asks to be one you know. They are born not made and so they do the best they can and sometimes for them it becomes too hard a task and meaningless. SIGH.