Church and gay marriage

So I made a comment about how I think Church's should support the legalization of gay marriage, there were a few people who got a little offended. When I commented on this on my status message via Ping.fm(a fabulous site, btw, it lets me use my cell phone to randomly run my mouth off to a much larger audience than before) a few interesting comments were made. Since the comment section on Facebook wouldn't allow me to fit my response into it's block, I'm posting it here:

Here's my issue with that, it's not an argument about morality when discussing legality. I agree, if one accepts a traditional evangelical view of the Authority of Scripture there is a clear case to be made for the morality of a homosexual practice, but when you're discussing legality that's a very different issue. We as Christians have a number of reasons why we should support the legalization of marriage for all, but the main one is for Constitutional protection. The only reason for passing such laws tends to come with a religious attitude, which is improper. If nothing else, a sense of self-preservation. Right now Christianity may be the predominant religion in this country, but how long is that going to last? Both paganism and Islam are growing at a much faster pace than Christianity in general, even more than traditional evangelicalism. If we have established that it's ok to pass a law because the predominant religion says it's ok, what happens when a different religion becomes more popular?

Further, let me just say that as both a Christian and a Libertarian, I am VERY bothered by the government and the church both getting involved in an issue that I think at best muddles their two divergent areas of responsibility. Marriage can either be A: a religious ceremony and agreement, sanctified by God and performed by the Church, between two people, whose identities are largely determined by that individual church's teachings on the Word of God. or B: a legal contract issued and controlled by the government of a given region, signed and agreed to by two adults, recognized by a governmental agency for certain legal and financial reasons. While many couples choose to connect themselves by both method, they are NOT the same thing, despite using the same name. There should not be a confusing of the two practices in the public mindset, the Church(here understood as the Church Cosmic, not a man-made organization with names connected to denominations, streets, and/or suburb names) should not be getting involved in the legal definition of the governmental contract any more than we would welcome the government to get involved in the application of a religious ritual.

Also, as a side note, to my friends who are openly involved or sympathize with the gay community, when you hear statement made by churches(man made organizations) in the public forum regarding this topic, what is your general reaction? (side note, extremist organizations such as "God Hates Fags" are worthless pieces of trash, at best there is an especially lonely spot in Hell reserved for them, I'd also be willing to go along with a case being made for them being considered demon possessed) As the Church(cosmic, not man made) which is our greater responsibility, getting someone like George W. Bush elected or reaching out to the members of our community with love and grace and servitude?

End of rant