Sure, alone doesn’t == loneliness for some people. Life the life that you want to live, there’s nobody keeping score, everyone’s too busy living their own lives to care much about what you do or don’t do, within reasonable societal norms - just idle judging as you’re doing about them.
This isn’t some new thing btw, I’m 55 and only had two people I would consider good friends. I married one, and the other died in his 40s. People come into our lives and leave, but I doubt I’ll make more real friends. I’m fine with that, partly because of the reasons you mention.












You’re assuming others are all like you.