That's a perfect example of what I'm talking about!
Someone who has their mind completely made up, and who would only enter into a conversation with someone to try to convince them of what they already know is the "Truth".
Unfortunately, the pro-Gay Marriage proponents are doing the exact same thing. Many of them are completely and totally convinced that the only reason you would stand against "Equality", is because you are homophobic and simply want to defend your right to discriminate. So many of these people feel it is their God-given responsibility to scold and belittle you; because you dare to use His Name as an excuse to express your own personal dislike for homosexuals.
I'm not saying this because I agree with their position. I'm just saying... that listening will sometimes reap certain results that you might otherwise miss out on.
Also do remember, that the number of actual gay people is a rather small portion of the population. And from that number of those who would bother to talk it over with Christians, is nearly zero.
More often than not, anyone who feels the drive to argue this issue with a Christian, is a straight person who feels they are on a crusade to fight for the innocent victims that Christians are persecuting. Considering the fact that we've already all but lost this battle (gay marriage is already the law in many countries and states in the USA), perhaps a change of tactics is in order? Maybe it's time to try to find a way to show the general population that we are in fact NOT bigots, and really did have valid reasons for opposing gay marriage?