Why everyone think it from prism of their faith, thats conflicting and narrowed. Think of people who are beyond faith system, trust they are in plenty. Think of people who take s*x as celebration, like many desirable activities pertaining to humanbeings, not see it just a production process or a SIN as propagated.
I’m sure, men liking men & women liking women must have started even before the invent of god itself……but that’s my point of view