You live for others? As in remove those others and you lose whole purpose of life? I am not trying to be rude, seems like retirement homes house plenty of such people but it doesn't make sense for younger folks... although this is hardly a choice, is it. But - I believe one can work on this and move themselves quite a bit if wanted.

My 2 cents - mountains and nature and activities in them are always beautiful, as in it doesn't get boring or mundane, not for anybody I know. Working out on oneself, experiencing various adventures, backpacking around the world, sports, adrenaline/risky activities that make you feel alive, seeing cultures and history and food... those are done for oneself and they are absolutely 100% fulfilling that no career could ever deliver.

Saying above as one such person, and also father of 2 amazing kids (and a pretty decent wife to complement) whom I love more than anything. But I don't live for them despite doing various hard sacrifices for them, I live for me and do those things for me, to be happy, content, recharged, better father and husband and when looking back at my life being fine with various choices made.