Well, I just got a response that I consider as outright idiotic and beside-the-point as any I have ever seen. I considered taking up the threads of the discussion and trying to bring the person back to the point. Then I thought, Naaah -- let it go.
It's not about who got the last word. It's not about who "wins" the argument. God has called us to peace (and if I respond to this one, I'll blow my peace, whatever it might do to the other person). I said my bit, let it stand on its own. Better to just -- fade away.