Resolved: Homosexuals are 'born that way'

Twin StudiesMy opponent claims that because identical twins share the same DNA, they should both have the same sex orientation, but they don't. Therefore, he claims, it must be environmental. This has a number of problems to it. First, making a point against the notion: "Homosexuals are born that way" does not automatically prove your argument. For example, I could say "Because identical twins don't have the same sexuality, it can't be genes, it must be flying dinosaurs.", and it would still follow the same logic you have used. Second, people who have gay siblings are more likely to volunteer for these types of scientific studies, which can cause the results to become skewed.I agree, sexual orientation is not entirely due to DNA. That does not mean, however, that it is automatically environmental. Hormones play a major part in determining gender as well as sexual orientation, namely, the hormones the baby is exposed to in the womb. When in the womb, all babies are female, and in order to become male require hormones, namely testosterone. It is entirely possible that in the case of twins, one twin is exposed to less testosterone than the other. This is how you get fraternal twins. If for whatever reason onebaby was exposed to less testosterone than the other but both came out as male, the one who received less testosterone is more likely to be gay. The flip side applies for girls. Gay ParentsMy opponent claims through this study that gay parents are more likely to have homosexual kids than straight parents do, and therefore the gay parents must somehow influencing their kid to also become gay. There are also a number or issues with this conclusion. First, again, gay people are more likely to volunteer for/agree to these kinds of studies, again making the test pool skewed. Second, it is also entirely possible that the child is biologically related to one of the parents, and that "homosexual gene" (to kind of over-simplify it) may have been passed down to the child.Reorientation TherapyThe way reorientation therapy works is that they give the "patient" a positive stimulus when they have lustful thoughts for the opposite sex and negative stimulus for when they have lustful thoughts for the same sex. They also may fill them up with estrogen/testosterone in an attempt to make them find the opposite sex more attractive. However, it has been shown time and time again that this does not work. The first and main reason is that homosexuality is not psychosis. Again, if my opponent is saying that homosexuality is mutable, he is also implying that it is some sort of disease. Homosexuality is NOT a disease, if it was a disease, psychologists or doctors would be easily be able to discern them from straight people. But they can't, as seen in a study of I can't recall the name but it was mentioned in a This American Life's episode 81 words. I will however, provide a similar study below.A recent APA task force did a study on this and found in their 2009 report that the participants in their study went through gay conversion therapy and came out negligibly more attracted to the opposite sex and remained just as attracted to the same sex. On the other hand, what did change was the patients state of mental health, as the side effects of such therapy's were loss of sexual feeling, depression, suicidality and anxiety.A lot of these studies that my opponent mentioned have a number of issues. From 1960 to 2007 only 83 studies confirm my opponents case, of which most had biases such as a court ordering that compelled them to take the therapy or a very small, low budget test pool. Also, a lot of footnotes here, did you just copy and paste this stuff? Because if you did, please stop, I will not debate with a website.Animals "There is a difference between homosexual behavior and homosexual orientation. There are no known animals who have *long term* homosexual relationships. What occurs in animals is not directly applicable to what occurs in humans."This statement has a number of issues. First, there are known animals who have long term homosexual relationships, a lot actually, namely geese and duck (who mate for life), dwarf chimpanzees (all of which, that's right, all, are bisexual), swans (also mate for life), domestic cats (mate for life), and lions (mate for life), to name a few. Second, my opponent forgets that humans are also animals. What applies to animals may also apply to humans, we are not suddenly above anything animal relate just because we are humans. This is why we do drug tests on mice; they 80% related to humans.I forgot to put sources last time, I put them here this time. Sorry!http://listverse.com...http://psychology.ucdavis.edu...http://www.livescience.com...http://www.frc.org...http://www.bestmedicaldegrees.com...http://en.wikipedia.org...http://www.wehonews.com...http://www.thisamericanlife.org...