Resolved: Homosexuals are 'born that way'

Hi, I will be arguing that homosexuals are "born that way"When my opponent says that homosexuals are not "born that way", he is implying that such a sexual orientation is artificial in one way or another. He says that "Environmental factors are the main reason homosexual tendencies develop". Now if this were true, we would see a certain demographic of homosexual people. For example, if exposure to, say, pine trees gives people a higher chance of being gay, then we would see people who live near pine trees or are otherwise regularly exposed to pine trees would be statistically "more gay" than people who aren't very much involved with pine trees. My point is, all gay people would have something in common environmentally, be it where they live or how they were raised, etc. However, we don't see that. There are homosexuals from an enormous range of demographics, such as from poor gays to rich gays to Chinese gays to American gays to famous gays to celebrity gays to atheist gays and to religious gays. If homosexuality was not inborn but was affected by environmental factors, there wouldn't be homosexuals with such a diverse array of backgrounds. All homosexuals do have something in common with each other, however, and that is their chromosomes. Scientists tested 400 gay men and found that homosexuality can be associated with at least two chromosomes, which affect a man's sexual orientation. In 1993 Dean Hamer studied the family history of 100 gay men and found that homosexuality tended to be inherited. More than 10% of brothers of gay men were also gay (compared to 3% of the population), and uncles and male cousins on the mother's side also had a higher chance of being gay. Hamer, upon analyzing the X-chromosome, found that 33 out of 40 gay brothers had similar marks on a certain region on the chromosome. That is not to say that homosexuality is entirely genetics, it also involves other factors such as the amount of hormones the baby was exposed to in the womb.If homosexuality was affected by environmental factors, lesbians would be the same in every way biologically to straight women, and gay men would also be in every way biologically the same as straight men. However, this is not the case. Testosterone is commonly associated to spatial reasoning. When put under a spatial reasoning test, gay men tended to do worse than straight men, and lesbians tended to do better than straight women. Gay men are 31% more likely to be left handed than straight men, and lesbians are 91% more likely to be left handed than straight women. The more older brothers a male has, the higher chance that male has of being gay. This is because after giving birth to a male, the mother's body may resist the production of another male baby and can change the sexual orientation of that baby. The way this happens was explained above throughout the chromosome region. In gay men and heterosexual women, the two sides of the brain were about the same size, while in gay women and heterosexual men, the right side of the brain was slightly larger. What does this all suggest? Gay men share traits with straight women, and gay women share traits with straight men. As such, homosexuality cannot be a product of the environment.When my opponent says that homosexuality is mutable, he implies one of three things: 1. Homosexuality is a choice 2. Homosexuality is a disease. 3. Homosexuality is evolutionarily advantageous.My opponent clearly states that he is not arguing that homosexuality is a choice, so #1 is out. Homosexuality is definitely not evolutionarily advantageous, as homosexuals can't mate, so #3 is out. What we are left with is #2, which says homosexuality is a disease. Now this may be a little provocative, and I hope not to insult anyone, but this is what I have deduced from my opponent's claim that homosexuality is mutable. This was my thought process:-Opponent claims homosexuality is mutable, or can be changed-Other things that are also mutable in terms of humans are choices, diseases (both biological and psychological), and some evolutionary adaptations.-Opponent clearly states that he is not arguing homosexuality is a choice. Cross choice out-Homosexuality is not evolutionary advantageous, as homosexuals can't mate. Cross that out-Disease is left. -Ergo, the statement "homosexuality is a mutable" implies that homosexuality is a disease.Now I don't know if Pro meant to imply this, and I'm sorry if he didn't, but homosexuality is clearly not a disease as proven by the above evidence. Gay conversion therapy exists, but these programs have a 3% percent "success" rate, and these success tended to be religiously correlated, whether it be the "cured" converts to a religion that disallow homosexuality or he/she is already involved in a religion that disallows homosexuality.To extended the diversity argument, over 1500 species have been found to have homosexual tendencies. Now these animals range from dwarf monkeys to lions to bison to geese to penguins and to dolphins. Now all of these animals live in completely different parts of the globe. How would it be possible that homosexual tendencies can be found in 1500 species from all over the globe if environmental factors are responsible for it?