Good luck with that. This article assumes that you would be able to have a reasonable discussion with a gay marriage supporter.
All you have to do is say “I don’t support gay marriage” and the majority of supporters start nearly foaming at the mouth and then start caling you a bigot and a homophobe and hate-monger. Trying to have a rational discussion with them is like trying to herd cats.
Because one can't reason with unreasonable people and their ideas, I generally ask them this question.
Why is two women titilating one another or one man putting his lower proboscis into another man's hind end so appealing to you?