Someone once said that logic is the beginning of wisdom, not the end.In order to understand a theist, you have to get into a theist's mind. First, although I admire logic, (I am a Trekkie, and my favorite character is Mr. Spock). But I don't use logic when dealing with my ideas of God. God, in my view, is beyond logic- someone else said this and was laughed, but that is the way it is.
However I think logic is the only thing we have that we can debate with, communicate with, reason with.