Sorry, I read that and I didn't see any legal arguments.
There was, it seemed, an assumption that marriage was about procreation. I suppose that there is an assumption that people having kids is good for the state? However, this would argue that, if a pair is incapable of having children, then they should not be granted the right to wed, regardless of whether is was a mixed sex marriage. No such prohibition exists. There should also be some requirement that a marriage that does not produce children should be disolved because it has not served its intended goal, kids.
Putting asside your "pleading" for a minute, it seems to me that this is not about breeding, it is about pairing. We grant married couple rights under the law that have nothing to do with procreation. Some (deductions for dependents) are available to people who have children. Those benefits are available no matter how that dependent was obtained -- birth or adoption. I think that it is a fine thing for government to give special rights to couples. I don't think that it right for the government to decide how the couple is formed. Should the government not recognize the pairing of couples of differnt race, height, weight, IQ, eye color, etc. What is sepecial about gender pairing? Technology makes it so that impregnation no longer requires the insertion of a penis into a vagina, so if kids are the point, no need for a man and woman to lie down together and f--k. Just go to Walmart and buy some sperm.
Let peole pair how they want.