I haven't read all the responses but I'll go with Elton John's view about 3-4 years ago.
We all know his lifestyle. He said (and I paraphrase):
"I'm against same-sex marriages. The tradition of marriage spans thousands of years and should not be changed. I would only support a civil-union bonding, specifically allowing the partner of a terminally ill gay person full visitation rights and carte blanche decisions regarding their estate and holdings."
Actually why should an atheist hetero-couple be bound by any church or religious dictate regarding marriage? Virtually all of them get married in a civil ceremony. I would only support a civil-union bonding among samesexers but with all the rights that I mentioned before.
Why is that so difficult to deal with? Is Western Civilization going to collapse over this???
Geez-o-pete, a hetero couple with greedy big bucks can fly to Vegas, get ****-faced, do a drive thru wedding, performed by some wacko Elvis-impersonator, fly home and get a divorce or annulment the next day!! Given our Lord's word on marriage, is that any better than a civil union bonding???