The only Non-God anti same sex marriage arguments I have heard are fatally flawed. Their arguments all place procedure over progress.
@Flackle: When I was saying that laws defining marriage as being between two people of the opposite sex was not directly against homosexuals getting married, was to point out the difference between a law having a disparate impact upon a group versus being completely against a particular group. For example, most states disallow felons from voting. It could be argued that in a particular state, since the majority of the felon population is of a minority race, that the law is against minorities. But this is not accurate... Even though the minorities will be disparately impacted by such a law doesn't mean that the law is truly against minorities, and thus is not a civil rights issue of racial discrimination. Likewise defining marriage as being between a man and a woman has a disparate impact on homosexuals, esp. since in the general sense of the term people marry someone they are in love with, but is not necessarily discriminatory against homosexuals from getting married, as long as they follow that it is with someone of the opposite sex.
So... Because these laws do not "directly" ban homosexuals from marrying one another, and only ban homosexuals from marrying one another as a consequence, then they are okay? Most laws that exist have unintended consequences. That doesn't make them right. The fact remains, unintended consequences are just as important as the intended consequences of a law, and those unintended consequences should be treated with just as much scrutiny. I already agreed that the federal government cannot improve this situation, and it should remain a states right issue. I already agreed that the federal government need not intervene (I never stated it was a civil rights issue, just a issue on human rights in general. I am frivolously for the separation of church and state, and any case where the government starts dictating anything about any specific religion then I call it a human rights issue).
It's up to us and the states to realize that we should not have laws running religious ceremonies. By that, I mean we should not have laws the specifically ban certain individuals from certain religious ceremonies, especially when that banning has no bearing on any other laws. Its obvious we should ban ceremonies that sacrifice humans (Being that murder is illegal in all other aspects of life), but we should have laws banning people of the opposite sex (Being that there is no other legitimate reason to ban the opposite sex in doing anything else).
If people (and churches) want to define marriage as being between a man and a woman only, that's fine. It's not the government's job to do that for them (and thus, in affect, for everyone else).
The government should only be defining the terms for unions between people (civil or otherwise). And if they want to ban people of the opposite gender when it comes to those unions, they better have a good reason. They'd have too, since they could no longer hide behind religious reasons.