You and others have purported that the notion of marriage being reserved for heterosexual pairing is the result of Christian tradition, that somehow it is the "fault" of Christianity that we ever came to believe marriage was supposed to be between men and women and not same-sex couples. The relevance of this third statement is to point out that all evidence from the earliest records of marriage support the idea of "traditional" marriage--that marriage is a religious arrangement involving 2 people: one man and one woman. Hammurabi's code refutes your assertions (the "traditional" marriage idea predates Christianity and much (if not all) of the Bible) and solidifies the fact that marriage is a religious entity.
Hammurabi's code says no such thing. All that:
Hammurabi (ruled ca. 1796 BCE – 1750 BCE) said he was chosen by the gods to deliver the law to his people
indicates is that Hammurabi was a religious person. There is a distinct difference between setting up a legal system that acknowledges marriage and setting up marriage as a religious tradition.
By your definition of religious, basically everything ever was religious because it was done by religious people.
Additionally, all that Hammurabi's code referring to traditional couples really means is that was the norm, nothing more.
However, it's not the fault of christianity either. Biological function is what established that norm. However, I'd like to think that humans are intelligent enough that not everything has to be about biological function anymore.
I want to know your position on gay marriage. Legal or Illegal?
If you want to know my position on it I find it sad that it's even an issue (I think it should be legal). Most of the opposition to gay marriage is purely religious, backed by Christian fundamentalists. What I find somewhat amusing is that even though the bible does say that you shouldn't lie with another man, it also says you can't eat lobsters (and various other things) in Leviticus 11:9 to 11:12. yet many of those fundamentalists have no problem eating lobster. There are a few non religious people who think gay marriage should be illegal, and to them I say this: there is no secular argument against gay marriage that can't also be applied to straight marriage (unless of course you think you can prove me wrong)
You have to acknowledge that you have a bias in that you would like things to be otherwise, but that isn't going to change the facts. Marriage has its origins in religious traditions. Marriage is between one man and one woman. Of course we could change the meaning of the word "marriage" to mean something else just as we could change the meaning of many other words. It would take a very long time for everyone to agree to this new meaning, and I doubt it would ever be totally successful. Another option, and remarkably more pragmatic in my opinion, is to simply work for what you really want--legal status for same-sex couples recognizing special financial benefits afforded married couples (+hospital visitation rights, adoption rights, etc.)
Parts of this echo my opinion on the subject. As I've stated before, I think the government should get out of the business of marriage entirely, and instead deal only in civil unions, regardless of the respective genders involved.
Part of what theloconate's point was in his original post was that the bible is the general source for the antihomosexuality view, but christians willingly ignore parts of the bible anyway, so strictly sticking to the bible clearly isn't very important.