That's really why my New Year's Resolution this year is to know when to stop having pointless conversations with theists, although it applies to just about every subject matter. I suspect I will have very few conversations in the future.
I have a few pointless conversations with atheists too, come to think of it.
But, surely you are just debating people that don't know how to defend their arguments ;)
That's what I said, religious apologists. :-)