The evening was going well until a person 15 years younger than me started talking to me about his 2-year-old son. And I think of my life, alone and miserable playing the loser.
Sons don't stay forever with their parents. Eventually his son would leave him and establish a family elsewhere with occasional visits from time to time.
Joining a community would be the solution for loneliness but also can consider pets in addition or you could go as far as adopting a son if u can't have one