So? Has this affected your marriage? Is it any of your business that "Adam and Steve" (thanks, FB, that's cute) get married Yup, and I didn't give a crap what anyone else thought about the issue anyway, not that it would have been anyone else's business in the first place. I don't give a crap what Pitt and Jolie do, it has no bearing on my marriage or our lives. Perhaps there's a benefit that you haven't thought about, like genuine love, for instance. That is why my wife and I are married. The whole thing in a nutshell was just plain old love. It wouldn't have mattered to me if we didn't get married, but we did and I won't say on the basis of mine whether anyone else should or shouldn't get married. I have no need for the control of it, nor do I feel threatened by the issue.
Well, then quit trying to think of more reasons.