Many people think weddings should be a lot more than just paper signing, and I agree. The legal aspects are but a part of what a wedding is, but they are all the state should be concerned with. But that kind of argument has no business in our legal system. Besides, the people who make this self-righteous, moralistic, judgmental kind of argument should go and extract the planks from their own eyes, if you ask me. Likewise, plenty have two mommies.
Plenty just have a mother or just a father.
Get over it, already. And for another, kids don't live in a vacuum. All kinds of people have influence over their lives, likely these people will be of both genders, regardless of who their parents are. I was pondering this in the shower this morning, so let's try this out. I admit that personally I have a harder time wrapping my brain around how such arrangements work on an interpersonal level.