Humans are a social species and most of us are happier with a long-term mate.

Single women pretend that they're happy single by dousing themselves in SSRIs, wine, and a deluge of affirmation from TV shows and social media.

Single men generally don't pretend to be happy single.

There is an extremely small minority of men and women who are genuinely happy single and don't need or want long term relationships, but they're very rare.