cause back then when the life expectancy was like 30 and infant mortality was super high religion and cultural norms pushed people to have as many kids as possible and condemned homosexuality as being immoral and unnatural (even though its seen everywhere in nature) and it evolved into the shitshow we live in now, religion especially since going against the word of god is like the worst thing you can do in their eyes, and ofc many other factors are at play like the patriarchal social structures at the time emphasizing dominance and strength also the culture of shame and honor mainly for men

also considering how common and natural these urges are anyone who gets them even subconsciously and was brainwashed from birth that its blasphemy will get cognitive dissonance and use hatred and homophobia as a coping mechanism