@krellin - OK, so returning to my situation... My wife and I don't just not have kids, we *can't* have kids. Therefore we aren't contributing to society by your definition of how a marriage contributes. So we shouldn't get the benefits afforded couples who *can* have kids? My wife has no plumbing for having children. She had a radical hysterectomy years ago. If she gets pregnant, it will be a true miracle of God. So you would deny us the benefits of other married couples?
You are lim9iting the benefit to society of marriage to just one thing, kids. That is complete and utter bullshit. I benefit society with the work I do as a software developer (and I line my own pockets too, yes) and my wife benefits me by making me happy which makes me more effective at work. You *cannot* impose an argument that the only benefit society gets out of a happy household is if it produces children. That is complete and utter bullshit and you damn well know it. So if you take that being the only societal benefit off the table, and that is the only societal benefit that requires a man and a woman to have naturally, then there is no reason to *not* grant the same rights and priviledges to same sec couples as are granted to traditional man and woman couples. And if you say that the kids benefit to society outweighs all others and is the only reason, then you must start denying those rights and privledges to couples who cannot have kids like my wife and I. You can't have it both ways.
Now, as for kids in the household, you assume the only way is for them to occur naturally. What about adoption? There are thousands of kids who need homes and thousands of couples (traditonal or otherwise) who arew willing to give them loving homes. Are you saying a couple who aren't the child's biological parent's can't produce a happy, healthy, and productive member of society? Well, then let's take a look at adopted children who have contributed to society, shall we?
Andrew Jackson - President of the US of A. Not important at all...
John Hancock - one of our founding fathers. Not too important at all...
Johann Sebastian Bach - Guess he didn't really contribute anything, did he...
Three real quick examples. There are tons more.
So don't discount adoptive parents and the positive influence they can have. And nothing in "nature" precludes *any* couple from being an adoptive couple, only the law does that and, with your view of the law, that makes it impossible for a loving couple who can't have kids naturally to be good parents and raise the next President or the next great thinker or the next great artist.
Oh, and while I'm thinking about it... I don't believe our current President had his father around when he was growing up. I may not agree with the man on everything, but even so, your "perfect household creates perfect kids" bullshit fails that litmus test as well.