It doesnt matter if you state your beliefs or not, your disdain for science, your miscomprehending of evolutionary process, and your insistence that marriage ( which only exists in Humans as a legal contract and does not exist in the rest of the animal kingdom at all ) makes it obvious.<quoted text>
I didn't state my beliefs. I stated a constraint that every society in human history has practiced. In fact, social scientists assert it has been present for ten million years.
Nor did I ever state it is the 'sole' purpose of marriage. It is the most basic essence however. Scientists also assert marriage would not exist we're it not for children.
All of this simply and clearly makes your 'back to the topic' a fallacy. Perhaps you want to switch from science to religion to make your point???
Marriage only exists as a legal contract, and I can prove beyond any possible doubt that same sex couples are married.
That is a fact, that you have your eyes tightly closed to.