Why do we care.

I was looking at my wife's facebook page and a lady posted something about gay marriage should be legal. Well once she clicked Share every fucking Christian's bible caught fire and they bombarded this lady. I am a little disgusted at the thought of what gay people do so I'm not waving my rainbow flag over here. I just don't understand why I have the right to vote for these people not to get married. I feel like this is modern day slavery. It seems that inconceivable that a book translated countless times THOUSANDS of years ago can convince people that Jesus has given YOU the right to tell someone that they can't marry whom they choose. I seen the scripts on the facebook page about not laying with another man (and I personally believe the same) but shouldn't He be the one to handle it. I'm honestly baffled that this is still against the law, why the hell do I care what other people do? I'll use one of my favorite sayings "It's got about as much to do with me as the price of tea in China."