A good discussion of the danger of accepting homosexuality as just another lifestyle, when it is anything but....
A learned friend of mine recently wrote an op-ed piece for a newspaper in which she argued that the drive for same-sex marriage is not simply about same-sex marriage; it is also about winning moral approval for homosexuality. If society, acting through the state, tells us that homosexuals can marry one another, then it is by the same token telling us that there is nothing morally objectionable about homosexual conduct. Homosexual "marriage" only threatens and weakens the family unit.
My friend is, of course, correct. But I'll add to this that the drive for same-sex marriage is not simply about same-sex marriage or the moral legitimization of homosexual behavior; it is also about the de-legitimizing of Christian morality. More, it is about the de-legitimizing of Christianity itself. What homosexuals desire more than anything else is affirmation of their "lifestyle".
The taboo on homosexual conduct is as old as Christianity itself (pace the late gay historian John Boswell, who argued -- absurdly -- that the taboo didn't appear until many centuries after the foundation of Christianity and is therefore not an essential part of Christian morality). And it is older even than that. It clearly goes back to Old Testament times. And if there is such a thing as natural law, the taboo is rooted in natural law; for nature (or God as author of nature) seems to have designed the anatomy and physiology of human beings in such a way that sex between men and women is sex "according to nature." Sex between men and men or between women and women, though it can be accomplished in an unnatural manner, doesn't seem to be what nature/God had in mind.
From the Catechism:
2358 The number of men and women who have deep-seated homosexual tendencies is not negligible. This inclination, which is objectively disordered, constitutes for most of them a trial. They must be accepted with respect, compassion, and sensitivity. Every sign of unjust discrimination in their regard should be avoided. These persons are called to fulfill God's will in their lives and, if they are Christians, to unite to the sacrifice of the Lord's Cross the difficulties they may encounter from their condition.