Like what? Give examplesBecause there are benefits to allowing SSM, and not allowing SSM is harmful. The state has no rational basis to not allow same sex couples to marry.
Gay sex can't procreate. They don't spawn new taxpayers.
Yes it is. Not everyone gets what they want. There are traditions and clubs that exclude people because of specific criteria. If marriage is a "civil right" why do only gays get the right to change it's definition and marry who they love?Not even remotely the same thing.