Can we conclude close relatives should marry too? How come it's not unconstitutional for our govt. to tell them to fuck off? What arguments supporting gay marriage don't apply to marriage between close relatives?
Or marriages of the polyamorous (polygamist) kink? The answer is "none". There can be no argument arbitrarily favoring one minority sex kink over another. Nor banning adult fathers from marrying adult sons. It's "their kink"..... Once the majority is taken out of deciding about social behaviors, one minority is as potent as another in telling the majority to fuck off.
Okay now that we have established that you wholeheartedly approve of polygamous marriage- what are you going to do to challenge your state's law against it?