I’m 60-years old and stopped looking when I was 30. Never been married, no children. People make choices in their lives and I chose to remain single, but then not everyone wants to be single their whole life.
Not everybody does and most that do remain single didn’t really have much say in the matter.
However, the best thing a perpetually single person cvan do for themselves is focus on enjoying life and developing their talents.
They’ll make themselves a more interesting person if somebody does come along. If the single person remains single, they’ll enjoy life more regardless.