Say no to gay marriage
Marriage is the union between a man and a woman. Gay marriage has no place in the world.A gay (or lesbian) partnership is not only unnatural - it has the potential to cause a reduction of the growth of the human population. There is no method by which a gay couple could conceive.
Going back to biblical times, if everybody on the planet were to be wiped out except for Adam and Eve, at least there's the chance that the human empire could be re-built (not taking into account the problems of incest, but that's a problem for another article). But if only Adam and David were to be spared from the hypothetical mass extinction event, there'd be absolutely no hope in the world that they could save humanity.
And how to you explain to children about why a homosexual couple can't reproduce?
Having said that, it is probably alright for a gay man to marry a lesbian woman.