Um, so those of us with kids can just lump it? Is that it? And straight couples without kids shouldn't be allowed to get married? Is that it?
It is a recognition of social obligation by the probability of procreation.
I don't quite follow your first sentence. If you have kids you have obligations to the kids and to society (and to the other parent of the kids) and marriage is a way of exercising your obligations, and a way of demonstrating you will fulfill them.
Exactly...we have kids...we are gay couples...are we 2nd class citizens? Are our kids 2nd class citizens?
Whose kids?