Clearly same sex marriage is a contradiction in terms. The fact that it is now regarded as perfectly right and proper shows that the world has gone slightly mad. You might think there are more important things to worry about but this is a real litmus text of spiritual understanding because what it involves (and this is why it has been pushed so hard by the left) is a radical restructuring of what a human being is. It is an essential part of severing us from our spiritual roots, and attempting to divorce us from the reality of God because it denies the truth of what we are and what he is.
The excuse of love used to justify it is just that, an excuse, and boils down to doing what I want. Human love, real or imagined, cannot be used to overturn and deny truth. Divine love is a different matter but then divine love always coincides with truth and is not dependent on personal emotions.
None of this means that homosexuals themselves should be judged or treated with disrespect in any way. I wish I didn't have to say that as it's obvious but one must be prepared for misunderstanding when talking on this subject, not to mention an often deliberate distortion of what one actually says to put one in a bad light. So I must make clear my position, which is the standard religious one, that while same sex marriage is entirely wrong, homosexuality itself is natural to homosexuals and they are loved by God in just the same way as heterosexuals. But this does not mean that either the practice or expression of homosexuality is in line with spiritual truth, and homosexuals need to understand this before anyone else for the sake of their own development.
You might ask why people should suffer for how they were born through no fault of their own. I would first of all say, how do you know that's the case? How do you know that our character is not the result of something we agreed to or were given as a life lesson before we were born? But then I would add that plenty of people are either born or live their lives in far more difficult circumstances than this. That is part of the reality of this world which is a school not a holiday resort. Besides we are all called to live our lives in a way that is spiritually right not personally satisfactory. Very often that does require going against that aspect of our nature that is fallen, and homosexuality is certainly a result of the Fall. 'Man and woman created he them'. It may have a role in the short term for God can bring good out of evil, but that role would be on a spiritual plane not a sexual one. By which I mean that God can use the fact that homosexuals exist to push people towards the spiritual path which they can explore more fully than perhaps would otherwise have been the case due to the fact that they cannot express their sexuality normally. There are others ways too but none would involve the desecration of a spiritual energy.
I'm sorry to put the matter so bluntly but that is what the expression of homosexuality is. It is the desecration of a spiritual energy. Of course, heterosexuals do this all the time in the modern world as well. We are all sinners, but just because overcoming sin is hard is no reason to deny its sinfulness.
I'm not saying that two people of the same sex cannot live together and even love each other but they should strive for a celibate life and their relationship should certainly not be called marriage or granted the same status. And frankly this is so obvious that only intellectuals, using that term in its derogatory sense of someone who restricts his thinking to abstractions separated from meaning, can fail to see it. Or dyed in the wool materialists or sentimentalists or those who follow the herd regardless of where it goes or homosexuals whose opinions are clouded by a personal agenda. But anyone relying on simple common sense, never mind spiritual understanding, can see that no same sex marriage was ever made in heaven.