[darkpuppet]

religion has changed over time, and yes, laws were based on the moral guidance of religion, but you're ignoring the fact that laws AND religion have changed over time, that the current definition of catholic marriage is relatively new, that the definition HAS changed many times over history, and there's no reason why it can't change now to reflect modern enlightenment instead of maintaining it's steadfast centuries old ignorance.

If a religious edict forbidding eating meat on Fridays can be made to boost the fishing industry, then why can't religion recognize that homosexuality is not immoral when the research demonstrates so?

Also, laws based on religion have a place only to maintain the greater good. There is no good argument against gay marriage, so there's no need to outlaw it. Outlawing it just discriminates.