Might be better to live in the present vs remembering all the sexism(or other negatives) in your past. Most of us don’t really care about what happened to you in the past anyway. I open doors for women and men. Men almost always say thanks and prolly think little of the gesture. Women on the other hand are often reading more into it. I’m a decent looking man who lives happily with another man and have never used opening a door as a pick up. I’m sure there are some that do but, why be offended either way? Maybe if you were ugly or fat it would be more of a rare occasion and you might enjoy it more. So eat shit, get fat and see what happens.