“If you say that people are born gay/rapist/murderer, you’re saying that it’s in the genes, however until this day, no such genes were discovered.”
No, I’m not saying it’s genetic at all. It’s personality. People are born with personality traits. There is no such thing as a “rapist gene” or a “gay gene”, but babies come into this world with natural predispositions for homosexuality or rape in the same way they might have a math aptitude or a liking for chocolate ice cream (despite environment and/or upbringing that would NOT cause these things, e.g. a child of English teachers going into mathematics).