Why do you think some people have such an aversion to homosexualtiy, trans etc. Is it an innate almost like an unconscious reaction from our past or is it a learned thing from society and religion? Is it because for life to exist and evolve it all procreates from plants to animals and everything in between?
As the study shows there is NO inate hetero disgust response so it must be conditioning and fear of the unkown i suppose.
If you are a believer in an omnipotent Gawd, then the only gawd-like conclusion is that your Gawd made these people in his/her/its' image, it should be blasphemous to denigrate them.
If you are a real atheist, your attitude most likely is, "none of my business"
The only thing I can conclude is the haters are afraid they will somehow become infected with beliefs/life choices other than what they were taught, which is a sign of stupidity.
I think people tend to believe what they're taught. If you're taught to be an intolerant and close minded bigot you'll be one and vice versa. Most people don't have the courage to reject their foundational beliefs and form their own belief/value system based on evidence they gather themselves.
Aversion to non-cis, non-hetero sex is purely the result of cultural conditioning. Human sexuality is NOT primarily for procreation. Less than 1% of the 100 million or so sex acts estimated to occur daily are fertile. That’s a lot of biological energy to expend for something with such a low success rate. The other 99% of sex acts must be for something else, and indeed they are. The primary function of sexuality in humans is social bonding and pleasure. Reproduction is a side effect for a certain range of those on the spectrum of gender and affection. Tying sexuality to reproduction was a parsimonious way for evolution to kill two birds with one stone, but pretending they are exclusive is, well, unscientific at best.