Its very simple, friend. Chemically, some boys are just born how do you say, soft. In youth some boys cant run with the alpha males because they have weak appearence. These boys are often shunned and end up being around the girls, where its safe you know. Jumping rope, playing hop scotch, drawing instead of being rough and active with the other boys. Its similar to many primitive tribes. The men that are unable to join the men on the hunt are left behind with the women and end up picking berries, sewing and gossiping. Spending more time with women then they do men they often develop mentally like a woman so its not a stretch of the imagination that these individuals could wind up being gay.
The remaining i feel are a result of physical abuse, mental abuse that promotes emasculation, molestation, finding other shunned / moist kids that are already sexually activated and being indoctrinated into that culture. There is a cause for everything, friend. There is no gene in your body that says you will be moist but external circumstances in the environment, create these phenom's and sadly, because of humanities inability to address these issues, they have instead adopted to cosign and promote them which means more of it will show up.
Its so demonic, friend.