I strongly suspect it is a bit of both, and some of neither. While genetics does likely play a significant role, the way society structures sexuality is also important. Sometimes we forget that sexuality has been viewed differently in the past. We also assume it will be viewed the same way in the future. Because of the way we tend to break down sexuality into a gay /straight dichotomy , individuals are effectively sorted in a manner that may not reflect thier actual nature. Kinsey argued that sexuality is a spectrum, and that most people fall somewhere in the middle. One end of the scale is 100 percent homosexual and the other end is 100 percent heterosexual. Even if in passing, he said it was relatively common to have a "gay thought" from time to time. not that an individual would act on them.
Our society places a preimum on "straight" and we are encouraged to to act accordingly. Men, in particular, are conditioned to act tough and hide any slight trace of something less than "pure" masculinity. I suspect that if our society did not care about sexuality as it does, there would be less early conditioning and therefore less people viewing themselves as exclusively straight.
The reason we have this debate is this: Anti-gay activists decare it to be a choice, so that the individual can alter their behavior and fit into mainstream straight society - and live in a way the activists deem fit. The pro-gay activists tend to argue that it is genetics. If it is genetics then there can be no change. Also, if it is genetics then a similar moral argument against homophobia can be used as the one used agianst racism - it is not okay to hate someone for being who they were born to be. To a certain extent, I think both sides are missing the point. We should not discriminate based sexuality - period. The "cause" of homosexuality is moot. It does not matter if someone has a genetic predisposition or decides they enjoy the lifestyle. It does not matter if both are in play. Depending on the individual, many factors are probably at work and trying to decipher them only highlights our society's narrow view of sexualtiy.
"But as always, technology refused to be dignity's bitch."--Vance DeGeneres













