"It's immoral" is by far the most popular.

"EWWWWW!"

That it "takes away" something from marriage between a man and a woman. Which sounds absolutely ludicrous to me!

Well, I'm gay and I don't like it. I'm not saying that I disapprove, but as someone who has made many sacrifices in life and invested a great deal of time and energy making the kind of money I want for myself. I'm not exactly gung-ho about it. I understand if a couple is going to adopt it's an important way to protect the kids. But as far as I'm concerned, when there aren't any kids, modern marriage is all about protecting the non bread-winner's lifestyle in the event of divorce.

It violates the historical wisdom of the marriage institute between the opposite genders.

It violates the traditional wisdom of the marriage institute between the opposite sexes.

The only argument there really is is if your God says it's wrong...

All very, very poor arguments against. it just goes to show how far ignorance and fear can take a voter. The definitional, procreation, and slippery-slope arguments . . . right-wing view, there is no real substance to it: As for the reductio ad absurdum of "then why can't I marry my dog, brother, car...etc." "Same-sex marriage would start down a "slippery slope" towards legalized incest, bestial marriage, polygamy and all kinds of other horrible consequences. A classic example of the reductio ad absurdum fallacy, it is calculated to create fear in the mind of anyone hearing the argument. It is, of course, absolutely without any merit based on experience. If the argument were true, wouldn't that have already happened in countries where forms of legalized gay marriage already exist? Wouldn't they have 'slid' towards legalized incest and bestial marriage? The reality is that a form of gay marriage has been legal in Scandinavian countries for over many years, and no such legalization has happened, nor has there been a clamor for it. It's a classic scare tactic - making the end scenario so scary and so horrible that the first step should never be taken. Such are the tactics of the fear and hatemongers." There is no outcry and public support for polyamorous sanctification, marital threesomes or the like. These people amount to less than one 1,000th of 1 percent, not 10% of the population. onsidering that South Africa offers gay marriage, along with a good portion of Western Europe, and Canada, America is already behind the curve.

Lol. Because God told me it was wrong? It's true, he whispered it to me while we were surfing on bananas off the coast of Neverland.

Religion, that's the number one argument against being gay at least with the Christian community it is...I could care less to be honest with you but if it pisses off the religious community, then I am all for it LMSFAO!

The arguments about who wears the dress.

Fallacious. EVERY single one of the arguments raised against are. http://en.wikipedia.org/wiki/History_of_same-sex_unions If folks who are against gay marriage were truly concerned about the 'sanctity" of marriage, they'd make divorce illegal.