Dunno about you guys but I can't really see myself living into my 50s or 60s without a wife or family.

I think I get through the days now, in my 30s, because subconsciously I still cling to some sort of hope that there's a possibility I might meet a woman who likes me for some reason and wants to spend her time with me. But it's much harder to picture myself aged 55, still living alone, never having been in a relationship. I don't know what I would be living for at that point.

That's not to say that people can't create meaningful lives for themselves in the absence of wives and children, but I think for most normal people starting a family is probably the easiest 'meaningful' thing for them to do with their lives. Absent that, I don't see myself being one of those guys who creates meaning by climbing all the highest mountains or writing a series of novels or whatever.