You don't believe that spouses ought to be able to inherit each other's property automatically?
Seems like a minor convenience.
Don't get me wrong, I think lots of people will still get married but it wouldn't have legal implications. I suppose most churches would offer the couple some sort of boilerplate legal agreement to sign around the time of the ceremony. Just like when you but life insurance, you can name pretty much anybody as the beneficiary.
Apparently Iowahawk read my post and had weighed in.
http://www.breitbart.com/InstaBlog/2013/03/26/Same-Sex-Marriage-and-Gilligan-s-Island-Game-Theory
I'd call inheritance rights a bit more than "a minor convenience"!