It’s a modern, Western conceit that homosexuality is something aberrant and unusual, which must be “explained.” There have been numerous societies in which homosexual behavior was accepted as a social norm and even seen as desirable, and in these societies essentially all of the men engaged in homosexuality when circumstances allowed. There are too many of these societies, arising independently from too many different races and in too many different areas, for there to be a common genetic explanation for the near-total incidence of homosexuality in these societies (accepting the genetic hypothesis, one would have to assume all men in these societies had the “gay gene”). Social norms, not genetics, dictated these societal differences; the idea that we are stamped “GAY” or “STRAIGHT” at conception reflects ignorance of the historical record. Similar study of any other sexual preference also tends to show virtually all of our sexual preferences (skin color, body type, lip size, eye color, hair color) are more a function of our social environment than our genes.
This puts efforts by gay advocacy groups to de-stigmatize homosexuality in a somewhat different light, which might be one reason why this truth is so fiercely resisted: their social engineering is actually increasing the number of homosexuals in society as homosexual behavior is gradually more accepted and our social norms evolve (remember, under the laughable “it’s genetic” argument this doesn’t happen; homosexuality is just something that occurs in 5-10% of society and always will be). I don’t argue that this phenomenon is bad or good, just that it’s happening and will continue to happen and we should be honest about that. (Note that I am also NOT arguing homosexuality is a choice, just that it's not genetically predestined in those who prefer their own sex.) Here’s my prediction: in 20 years, homosexual relationships, esp among women where it is far less stigmatized, will not only be much more common that they are today (and in the under-30 female crowd they are already more common than you probably think; most close female friends of mine under 30 have privately admitted a same-sex experience or two) but much more open for kids in their teens and 20s as their Gen X parents dismiss their behavior with a wink and a nod (and perhaps even a “well, at least they can’t get pregnant that way”). Many urban young people will start to regard heterosexual sex as something like we view marriage today: what you do when you want to settle down, move to the ‘burbs, and start a family. Already we have the beginnings of this in a class of self-described “metrosexuals.”
Again, I don’t argue that this societal evolution is bad or good. I could point out ramifications both pro and con from a social engineering perspective. I know the idea certainly scares a lot of my Christian friends, but if you don’t like it, hey: you can teach your kids whatever social norms you think are best. That’s our right as Americans, and that’s what parents are supposed to do.