Typo, that should read NOW that both partners have equal standing in the law and ARE essentially without LEGAL gender that the gov't can assign, then there isn't much point in keeping gay couples from marrying on that basis. This is NOT at the expense of op sex marriage, any more than non parent married couples exist at the expense of parental married couples.
It really doesn't make any sense to keep custodial committed gay couples FROM being self reliant, responsible to each other and their children. Who ELSE is going to be? And how are THEIR children less deserving of the stability of married parents than OTHER children?