May not be such a great idea to them after better than half have to start paying out for their "divorces."
Sure, why not. A state recognized marriage for a gay couple should come with all of the perks, and downfalls, of a heterosexual one.
I have not seen a single cogent argument as to why gay people should not be allowed a recognized civil "marriage" (inasmuch as the government should be involved in the question of marriage in the first place).