The only reason not given that I have heard is that it is a break with the tradition of marriage in our society - one man and one woman.
Why that should matter I do not know. Traditions come and go as far as I can see.
There isn't a single other argument that is anything approaching real IMHO.
The funniest thing I heard was that it undermines the sanctity of marriage. That came from a colleague of my wife's at a dinner party. He was there with his wife - his third wife and she had been married once before. When I pointed out that as far as I was concerned it was his casual approach to marriage that undermined the value of my marriage rather than the sex of his chosen partner he went rather quiet.
Why that should matter I do not know. Traditions come and go as far as I can see.
There isn't a single other argument that is anything approaching real IMHO.
The funniest thing I heard was that it undermines the sanctity of marriage. That came from a colleague of my wife's at a dinner party. He was there with his wife - his third wife and she had been married once before. When I pointed out that as far as I was concerned it was his casual approach to marriage that undermined the value of my marriage rather than the sex of his chosen partner he went rather quiet.
