You know, that's just silly. You are talking about couples that probably were thinking about kids when they got married. For them, it WAS about the children and in that is why marriage was created...of course they will not be unmarried.
I'll even go a step farther, so as to be consistant. Gay couples that adopt children IMO should be allowed to be married. All rights and benifits. However, if subsequent evidence shows that couples are adopting SOLELY for this reason AND a higher than normal "Bad outcome" rate for the children is observed, it would have negative implications for the ability of gays to adopt (which BTW I do support assuming rigourous screening).
