Wow, get it straight, gays have the exact same rights as straight people. Gays are allowed to marry people of the opposite sex.
Whether they want to or not isn't the government's problem. I'm sure the government allows me to do plenty of stuff I have no interest in doing (for example, carrying guns, smoking cigarettes, always driving 10 miles under the speed limit).
Legalizing a "gay union" that receives similar rights to 'married' couples (which i'm not opposed to btw) is independent of the legalization of a traditional marriage; marriage is VERY well-defined throughout history, almost regardless of race, religion, whatever (unless you really really want to discuss polygamy
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), and there should be no issue with the way the government uses that term, since if someone ever speaks the word "marriage" without leading it with the word "gay", there are almost zero people in the world who would think they would have to ask whether it was a same-sex or opposite-sex marriage
The institution of marriage largely isn't even about "love" all around the world; arranged marriages have been around forever, and still continue to persist in some cultures, because as many see it, marriage can instead be about procreation or politics, and if you say that is definitively wrong, then you are being just as closeminded as people you accuse of being homophobic
I'm probably rambling and at least a little bit off topic, but to me, an extension of the term "marriage" is in no way the answer.