I don't think that because I'm not married it's made my life any less. That old maid myth is garbage.
Why are we here? Where do we come from? Traditionally, these are questions for philosophy, but philosophy is dead.
As they say in the bible, that you're supposed to rejoice when people die and mourn when they're born, because it's one of the most painful acts you go through in life, is being born, and dying.