There are plenty of liers on both sides of this. I personally believe there are a lot more on the homosexual side. I'm sure you'll disagree!
Therapists who treat men and women struggling with same-sex attractions say that there are several consistent factors that contribute to the emergence of homosexuality: gender confusion in childhood, a failure to internalize maleness, and sexual abuse by a same-sex predator. Dr. Gregory Dickson, whose doctoral thesis is on the relationship between a mother and son in the development of homosexuality, found that 49% of the homosexuals he surveyed said they had been molested, compared to less than 2% of heterosexuals. Other research confirms what therapists have known for decades: Homosexuals are made, not born. And they are frequently “made” by older men who molest them as youngsters. Counselor Dr. Robert Hicks, author of The Masculine Journey has some sobering thoughts on the real origins of homosexual attractions: “…In counseling gay men for twenty years, I have not had one yet whom I would say had a normative childhood or normative adolescent development in the sexual arena. More often than not I have found stories of abusive, alcoholic, or absent (physically and emotionally) fathers; stories of incest or first experiences of sex forced upon them by older brothers, neighborhood men, or even friends. I sometimes find these men have been early exposure to pornography….” It is worth repeating: Homosexuals are made, not born.