Falsifiability Not An Adequate Test
For whatever reason, the idea that if something is not falsifiable then it is not worth discussing is prevalent among many non-believers. I'm not sure why. I'm not sure what falsifiability even means honestly (but from what I've heard it is rooted in the thought of Karl Popper, and I haven't read any of his works). Christopher Hitchens in his debate with William Lane Craig seemed to take this line. He said it didn't matter to him to refute his arguments because they were unfalsifiable, and a test of a good argument was that it is falsifiable, not that it is unfalsifiable.