@Godwin's Law
"However, sexual orientation is simply an issue of personal preference."
Sorry, but that's an incorrect. I am gay, but I didn't wake up one day and think "Gee, this gay thing sounds like a lot of fun. I'll go find myself a man!" I knew from a very young age (8 or so) that I wasn't "wired" the same way as the other kids/boys at school. Over time it became apparent what this was. But to say that it is a "preference", as if to say that I one day made this conscious decision is frankly wrong.
I know a lot of people think that it is a choice that all of us gay people make, but that is just general ignorance.
Also, I'm not alone - all of the gay men I have been with and all of the other gay people I've interacted with over the years, have felt the same way. Whether you wish to interpret that as a sign of a gay gene or not is entirely up to you. For what it is worth, I'm not sure there is a gay gene, but I wouldn't rule it out just yet. At least, not until the actions of every gene in the human body have been fully mapped to physio- and pyscho- logical functions, and the interplay between these genes is understood and and the evidence points conclusively away from a gay gene. But there is a large body of growing anecdotal evidence to suggest that gay people don't just decide to become gay. It isn't like choosing between a pair of shoes to wear or whether you suddenly decide you don't (or do) like this ice cream or that.
As for whether gay people should be allowed to "marry" or not... I'm of the opinion that I don't care. If religious people want their hollow victory then fine, have it. So long as there is still some institution which carries all of the same rights and responsibilities of marriage then who really loses out? Gay people fall in love too you know.
"I suppose it all began when I came out of the womb. I looked back up at my mother and thought to myself, 'That's the last time I'm going up one of those.'"
-- Stephen Fry
Why is it that, as a culture, we are more comfortable seeing two men holding guns than holding hands?
-- Ernest Gaines
To those who understand I extend my hand; To the doubtful I demand to take me as I am.