Who has the right to decide the definition of marriage

Still a different situation for more than "sexual reasons" - it's accepted of course that marriage isn't just about child-rearing. It's just that the same-sex couples who are in a socially/emotionally identical situation as many opposite-sex couples denied means to be considered family. No one - not even the "mother and grandmother" - would claim their relationship or social circumstances are equal.

 

And yet you continue to insist its still about sex. Like I said, being in a sexual relation has no rational relation to the governmental interest in fostering the formation of stable homes.
The institution of marriage, as old as civilization, hasn't evolved because heterosexual couples have sex. It evolved because when heterosexual couples have sex, children in need of a stable home are frequently the results

 

Plus, the mother and grandmother are already legally family! Why dixon keeps trying to use that one is ridiculous.

 

I insist no such thing. No one is saying a same-sex married couple must have sex, and no one is saying an opposite sex couple must have sex (which is why an unconsummated prisoner marriage is still valid). They are however, for all intents and purposes, fundamentally and emotionally as well as socially significant differences between the aforementioned relationships and a mother and grandmother. Marriage serves in part to confer a 'family status' on those who have no such connection.

 

Yeah, they are not in a sexual relationship, which has no rational relation to the stated governmental interest in fostering the formation of stable homes.

 

But they don't get any of the tax breaks and governmental entitlements of marriage intended to foster the formation of stable homes. Being related or unrelated has no effect upon the need for a stable home or the benefit to be derived. No one denies their differences. But those differences must have SOME rational relation to the stated governmental interest. They don't.

 

Nope. That is not how SCOTUS ruled.