What I think is hilarious about this issue, is that if you cross out references to sexual orientation and replace them with ones regarding race, these arguments are almost verbatim what they once were for the justification of not allowing someone to marry outside of their race.
That is because both are nothing but pure unadulterated bigotry, a blind delusional state in which the rationalization for the position is an unconscious bias and hate to which the bigot is completely blind.
At root the two positions are based on a feeling one holds deeply that one is certain must be correct, that what is happening is evil.
We will find lots of Blacks, for example, deeply resentful of laws that bar inter-racial marriage, but consider that homosexual marriage is an evil sin.
This is because, in every case, a bigot has been taught that the truth is not something one discovers by logic and the pursuit of reason, but must be gotten from some musty old book.
They see their religious belief to be the alpha and omega in which if every word isn't true the universe will collapse.
These are the blinded small minded folk that haunt the human race, whose fear of evil is the source of all human disgrace, the monsters that kill and destroy the world in the name of the Good. They are the very evil they hold in contempt.