kage, I think I misunderstood your original quote. Unfortunately now that I think I understand it more I like it less.
"Marriage is civilization's endorsement of the pair bond. [But we will have to think about what that means and why] The pair bond predates both law and religion. [Yes, but we need to understand what that has to do with the price of bananas] Neither can claim to have the final say on what constitutes a "real marriage." [good reason to suspect that the notion that gays can't marry isn't etched in stone and is open to evolution.] By it's very nature, it carries with it an undeniable, intrinsic quality - the goal of reproduction. [You are here making a blanket statement as if it were fact, but you don't offer any proof of that position. Certainly infertile couples are allowed to marry, which implies that the goal of marriage may lie elsewhere than just procreation. We know two things, one that marriage isn't necessary to procreate and two that marriage is open to those men and women who can't. We know also that marriage is an announcement to the world of a bonding, a legal right, often a dowry and transfer of title. All this and there are no kids yet in the picture. Clearly marriage is a complex social structure meaning many things. When it is arranged it isn't even about love.] For obvious reasons, this requires the union to consist of a man and a woman. [Hehe, please don't use 'obvious' as though it confers some sort of credence. What you are saying is as obvious as mud, or better yet obviously way way too narrow. I can see that it's not obvious at all.] I'm sorry to say this is the one thing I can't support my gay friends in, as much as I would like to. I've seen gay couples exude far more consideration, love, and fidelity than many hetero couples, but supporting gay marriage (even though I'm liberal) would mean me having to turn a blind eye to nature. [I don't understand what you mean by nature and what do you mean by turn a blind eye. I of course understand the expression. You seem to be turning a blind eye to the fact that the statements you offer here are unsubstantiated opinion and you know where that leads us.] As much as it pains me to say it, that I cannot do. [But I think you just did.]