1) I have no reason at all to believe that gay people would whine more about the vagaries of marriage than would straight people.
2) I agree that marriage is ****ed up, and I'm assuming you're just making a joke about that fact, but on the off chance that you're not, the gay marriage issue is about equality under the law. Not about how awesome marriage is.
I have been married 3 times.My first 2 lasted 3 years each. My present wife and I have been married 17 years.
Gays do not understand that marriage is much more than being friends. A successful marriage takes commitment and hard work from both people.