What a lovely OP and some good answers too. People who " think " they're above others are, to me, sad individuals who know very little outside of their own cocoons of sheltered lives.
Somewhere along the line you'll eventually meet a solid down to earth human being who doesn't see life through rose-coloured specs and who'll accept you for who you are, there are plenty of them around if you look in the right places. You don't need a " plastic snob " in your life, they're boring and depressing and full of me,me,me.
Get yourself out and about and try and remain upbeat. As for the gym just picture in your mind the Victoria Wood sketch when she was at the gym, hilarious, then think about those near you who go there.