As for 5000 year old traditions, I suppose we shouldn't have dropped burning heretics at the stake? Enslaving people of other races or religions? Primogeniture? Monarchy? Royal infallibility?
Get serious. Be honest. Even if you and your religion hate gays as offenders of God, consider that the LAW should be different from your religious standards. Or you are just Shariah in another form. And by the way, if you would be intellectually honest about the lack of harm from gay marriage, you MIGHT have a chance to tear down big government, which IS ruining the country and the family.