That would be a little pointless, don't you think? I'm sure you've summarily dismissed every argument you've ever heard against gay marriage. So to ask for a "good argument" when you're hardly objective is disingenuous.
All I've heard is: "oh noes!! the definition!!"
or.... we should not defy what creates us. (I dont hate this one, I simply disagree with it).
or...... it's bad to raise kids that way (unsubstantiated claim).
Do we have others?
It's a sin (so much for CIVIL being separate from the religious)
Think of the CHILDREN!!!!!! (children aren't getting married....at least gay children aren't...can't speak for those wacky straights)
They can't have children. (marriage and child-bearing are mutually exclusive for straights...why does it suddenly become a requirement for gays who want to marry)
We're already equal. (ah, no we're not...even those of us with civil unions don't have the over 1000 rights, privileges, benefits AND responsibilities straights get with a simple $50 marriage license)
We can get every thing with powers of attorney, etc. (
at thousands of dollars AND still not be recognized beyond our state borders)
I may think of more later.