The same tired tripe has been spewed before. Just as when intermixed racial marriages were not allowed and against the laws, 'black people' or 'Asian people' had the same rights as white people. They could marry according to their race, therefore why did they expect 'special rights'. It's such a ridiculous argument, that anyone with a single shred of intellectual integrity would be embarrassed for belching up such crap.
Claiming that marriage is the bedrock of civilization and of 'traditional values' is just as ridiculous. Marriage for far longer than it's current definition was used as a way to increase wealth and power. Women were property. Marriage wasn't for love, nor sacredness, nor any other moral reason. It was a union of convenience. Men and women had their sexual partners on the side. Oh egad! What would the bible (puke) say about such adultery?
As studies have shown in the age ranges of 16 to 25, they overwhelmingly support gay marriage and people. Even in the 25 to 39 demographic it is strongly pro-gay rights. Only as you get into the 50+ age range does it turn against gay people. Soon enough all those people, and those who seek to deny equal rights will be dead, and the never ending march to equality for not only gay people, but other minorities as well will keep moving forward.
In 2007 according to the US Census Bureau our country was approaching 36% of non-white people. By 2050 or sooner non-whites will make up 50%+ of the US population. It's simply a numbers game the status quo cannot keep up any longer. Like it or not, the rights of ALL people will continue to strengthen whether you like it or not.