Down the road it seems pointless/irrelevant to think like that, but I also have the feeling that there are certain things one 'should' have experienced in order to have given living a proper shot. Like autodidact learning (e.g. a second language or just how to use the body efficiently), reading, sexuality, experiencing a foreign culture (as long as there are any) - social dynamics, deeply encounter nature, silence, the psychedelic realm or other non-ordinary states of consciousness, major loss of whatever kind, etc. Perhaps these things (and others) have a common theme..?