Libertarians do not oppose homosexual marriage, so when they make these arguments people should understand where they are coming from. They would basically abolish marriage, which is a stated goal of the radical homosexual movement.
My issue is the reliance on govt for determining the morality society should live by.
I don’t understand the fear of leaving marriage to the domain of faith/religion. The govt has become the arbiter of marriage and that’s heresy in my opinion.