I'm not sure how to reply to some of this but I'll try.
You begin by saying "You are trying to make a biological fact into something arbitrary." when I believe I am attempting to do no such thing. I referred to other arguments that other people have made - but those are other people and not me. I referred to liberals in an attempt to refer to their motivations. Referring to those motivations doesn't mean I share those motivations. I thought I even said I explicitly agreed with you about gay marriage.
That aside - I believe the idea that THEY are treating biological facts as something arbitrary is disputable. Some are but many are not. Liberalism is no more monolithic than conservatism. Or do you believe that your ideas would enjoy 100% support in these forums? Motivations play a vital roll in what they believe and why.
Now when you say that " Sexual morality in religion and marriage were instituted to protect the man/woman relationship and to promote the healthiest environment to raise emotionally healthy children for the most successful future of a civil society." you haven't actually disagreed with anything I said. That fits with the definition I gave of marriage as a sacrament instituted by Christ. If Christ elevated it to that position that means that it was other things at other times to other people. Else what did he elevate it from? Marriage is no more monolithic than conservatism. Even today there are cultures that permit chattel marriages, plural marriages, and even post-humous marriage by proxy. Are all these people sincerely pursuing these ideals acting out of hatred for and desire to mock Christians? I think not. Do we want to sway them to our point of view about these things? Certainly. Do we do so by ascribing evil and mockery to them when they have been attempting to live the best life they know? Hardly.
Your last question touches on what I was trying to drive at. You ask: Why would anyone want to go backwards and copy the Spartans or the Nazi Brownshirts or the imperialist Japanese, in elevating behaviors that destroy the family of man in every civilization that nihilistic behavior was embraced? Well .... that's just it. Usually they don't think that is what they are trying to move our culture to. Most of the time these people sincerely believe they are trying to move our culture to something much better than any of that. They are sincerely wrong and joined by a nihilistic and destructive minority that might well be pursuing those ends in a knowingly and wantonly destructive fashion -- but this is usually a very very small if very very destructive minority. If we judge the whole group by the worst of it's individual members and ascribe that worst motivation to all of them ... well... usually end up alienating them in such a way that people are no longer interested in hearing what we have to say. It's abrasive and they reject it. Rightly so since those are not, in fact, their motivations but rather the motivations of a smaller part of their number that they themselves may not even like.
Given that conservatism is, more or less, always running against the majority grain in any given time or place I think it's best to avoid abrasivness and mis-ascribed motives if we hope to get anything done.
Even today there are cultures that permit chattel marriages, plural marriages, and even post-humous marriage by proxy. Are all these people sincerely pursuing these ideals acting out of hatred for and desire to mock Christians? My point is that the Founding Fathers analyzed all these cultures and in their genius decided what would create the most perfect government for all on earth. All others cultures were abject failures. The US was a tremendous success story in a myriad of ways and all because of the Principles that the Founders adhered to-- The first one=="The only reliable basis for sound government and just human relations is Natural Law." [The 5000 Year Leap]. Actually, this was Cicero's dream. Cicero was murdered in 43 B.C. (Christianity has nothing to do with Natural Law although Cicero believed that reason which could grow and be perfected and become wisdom came from the Creator, the Supreme God.
All I am saying is that homosexuality goes against Nature's Law and God's Law which were the foundation of this country. Radical homosexuals want to enact legislation such as hate laws that take away the freedom of thought and the freedom of religion. To restructure a society and its fundamental laws to teach "truths" to children that Heather has Two Mommies? That Steve can marry Dave. The movement is trying to destroy logic and the institutions (such as marriage, religion, and family) that have existed for hundreds of years.
To destroy this country, you have to destroy those institutions that made this country strong (Marxist goal). Israel is throwing out their traditions and Laws (and reason) that have existed for thousands of years. For what? Selfish hedonistic, pagan reasons that will ultimately destroy the traditional family--that which is the fundamental unit of the most successful country on earth--in terms of equality for all (including women), freedom, wealth, happiness, etc.
Finally, yes, homosexuality mocks Judaism and Christianity, as well, as Nature's Law. It might not be intentional to all who practice the lifestyle, but it debases the body and I just don't have the time to explain it--the Pope does an excellent job in his Encyclical Letter, "Deus Caritas Est". Yes, that is a Christian view and it is theology based on thousands of years of philosophy. It is so much more profound than any shallow, bizarre, thinking of the Andrew Sullivans in the world.