"You can't say gay couples shouldn't be married, after all, they are born that way." is one of the most common arguments for gay "marriage." The idea is if the public is convinced that homosexuality is innate and not a choice, then the public as a whole will become more accepting of homosexuality and gay marriage. However, this argument has no scientific support and indeed, neurology may provide an explanation of how homosexuality is indeed a choice.
Hasn't it Been Proven to be Genetic?
The short answer is no--there has never been any biologic or genetic explanation for homosexuality. In fact, Colombia University professors Dr. Byrne and Parsons explain that there "Is no evidence at present to substantiate a biological theory. [T]he appeal of current biological explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data." Quite simply, there is absolutely no experimental or observational evidence that homosexuality is genetic. In fact, there is much more evidence that it is due to psychological conditions or the persons own free will. This would indeed explain the large number of ex-gay persons who become heterosexual after a religious experience.
So, Why Are They Gay?
Although there are a number of theories, none of which have been tested, I personally hold one to be most likely: namely, that homosexuality is a result of a neural plastic connections favoring homosexual behavior being strengthened by active stimulus. This is simply a smarter way to say that when a person's reward centers in the brain are triggered during sexually deviant acts (such as homosexuality) a connection between homosexuality and rewards builds. Perhaps this short video can explain better than I the mechanism by which I purpose homosexuality is derived.
Simply replace the porn addiction with homosexuality and its a pretty concise and intuitive reason for homosexuality. However, what is most interesting about the video was the part at the end. Specifically when the narrator said that porn addiction can be overcome by actively blocking the stimulus. Which brings me to my final point.
Ex-Gays: Evidence Against Innate Homosexuality
There exists large populations of people who, having been homosexual for long periods of time, decide to no longer be homosexual. Many reasons exist for their wishing to leave the homosexual lifestyle, but the most prevalent ones are internal--not dictated by societal pressure as shown here. This includes spiritual as well as emotional reasons. Pretty simply, if homosexuality truly was innate, something one is born with like left handedness, then there should be virtually no people leaving homosexuality. However, large numbers of people do, which strongly indicates that heterosexuality is the default for all people.
Why It Matters
One of the ways that homosexual activists plan on integrating their perversion into the public and achieving their goal of marriage redefinition is by swaying public opinion. One of the easiest ways to do this is by constructing the image of an oppressed people who are unfairly treated due to no fault of their own. Simply put, they want to victimize themselves so the average American will emotionally support their agenda. However, this method can only work if it appears they have no control over their oppression, ie. born that way. By perpetuating the lie that homosexuality isn't a choice, their propaganda is strengthened and their goals are even nearer. So what, dear reader, may you do to stop this? Share the truth: simply explain why homosexuality is a choice and educate the public. In due time the truth shall surface and their foot shall slide; but we can help it along.