[intslack]

>My point is that people who opposed interracial marriage thought that they had a rational basis for doing so (even though it didn't make sense); similarly, people who oppose gay marriage today also think they have rational bases for doing so, even though they don't make sense.

Not really, as I said before there’s no biological basis for refusing to accept an interracial relationship as a marriage.

I'm not going to continue defending views that aren't my own, so if you're interested in reading what exactly "traditional marriage" defenders are talking about then try this review: http://www.harvard-jlpp.com/wp-content/uploads/2013/10/Georg... (pdf)