If LGBT is unnatural and "bad", how come so many people can be born not liking the opposite sex no matter how hard you force them since birth?

How come many LGBT still exist in middle east and places that will kill them if they were discovered? If its a learned behavior, why cant they stop? Are they not afraid of death?

They even found LGBT in very remote places and ancient tribes, are you saying these ancient people also learned this behavior from LGBT culture?