It is definitely learned behavior and unnatural. It also causes a lot of disease and is destructive.
Cant tell if trolling or stupid
Why not both? Also did you forget about the AIDs epidemic in the 80-90s lol. Surprise surprise sticking your johnson in an asshole is a perverse and unnatural use of your organ.
'learned behaviour' - extremely low brainpower take, read a bit.
'causes disease and is destructive [...] perverse and unnatural' - i think you will find there are tons of people having straight sex in ways other than the "norm", including dicks going into asses i'm afraid.
HIV didn't originate from gay sex, even if it was among gay people that it first became a major issue.
i do actually agree with the point that gay people shouldn't, or anyone at all, force their sexuality on others or do sexual things publicly/try to berate others for not liking the same things they do. you like what you like and as long as you do it privately nobody should care. that's on overtly sexual things, i don't think you should have a problem seeing two people hugging or kissing in public. just carry on with your day and ignore it.