Your quote here: implies that sexual behavior has historically been between man and woman, and recently there is an enlightened movement that is popular so people are now pro homosexual behavior.
But what was shown is that for thousands of years and in many of the greatest societies in "history" held that homosexual behavior was the preferred way of having a partner you love.
So by saying that history would dictate that marriage should be between marriage (or sexual behavior) should be between a man and woman is simply inaccurate. And to imply that it is a enlightened (meaning newer and recent) movement that is pro-gay, is also historically inaccurate as it has a long history in this world and basis.
To broaden the discussion the Torah doesn't really comment on a marriage contract between two men, only about sexual contact, the court didn't rule on sexual contact, only on a contract which maybe the Torah does or doesn't recognize as having any halachik ramifications.
For example if yankel and shimon want tax benefits of being married does the torah forbid this? I do not think so.
That example shows the ruling of the court is not necessarily against halacha.
I do agree it is a break down of the morals and spirit of the Torah however.
That is how I would answer you in short. This can be talked about for days.
I want to answer you point by point but given the short day I will say this and leave someone else to advocate for God's word.
First off the fact that it existed in some places says nothing to the effect that it was a commonly held belief or that it was held on the same level s regular marriage.
"But what was shown is that for thousands of years and in many of the greatest societies in "history" held that homosexual behavior was the preferred way of having a partner you love." Please stop being ridiculous that's false. And don't go show me one pagan society that did it-that won't cut it.
The movement now is stronger than it's ever been. Of course it's always been around but not like this.
And your claim of that it's not technically forbidden is so ludicrous I won't even bother much with it. I think we both know the judges didn't intend it for people just living together in the same house. Stop being ridiculous.
I'm signing out of this now-I won't debate the irrefutable corruption of Western morals on A Friday afternoon. I might as well debate someone who claims the sky is red.