Marriage.

I was thinking... Once the gay marriage is legal, how long until marriage with anyone? Say, I love my best friend. We are both males, heterosexuals, but we want a family together. We adopt a child and provide him with home and family. Is there a problem with that? And then, to go even further, I, for instance, really love the Sun. More than any other thing in the world. Why couldn't I marry something I love?