I honestly believe +90% of gays were abused by men at young age. The remaining 10% are hardcore sociopaths. This is probably true throughout all peoples in history. If you take those two metrics out you are left with the normal 95% of the population who look at same sex relations with total disgust. We get the same reaction from gay men kissing as we do looking at rotten meat, which makes me think its an evolutionary response to protect us against the obvious.