Source: Frederica.com by Frederica Mathewes-Green With some kind of genius for stupidity, I said on my Facebook page recently that I am not particularly opposed to gay marriage. No, it was worse than that; what I said was, “I was asked why I don’t oppose gay marriage, and I’ll try to make this brief. It’s because I don’t agree that gay marriage harms society, or harms marriage.” I’m no big-time writer, but it caused an outsized stir. My readers are mostly Christian and conservative, and the comments overflowed. Clearly, I struck a nerve. But it was a nerve I never…