The trouble with testing the "God Hypothesis" using scientific means is that Science deals with the observable universe, whereas religion places God in a seperate universe, exempt from the laws of time and space. The only way to reach this 'world' is via death and ressurrection - except in rare cases when people allegedly shimmer in a halo of light before vanishing as though teleported.

In this respect, Science is working blind - and science can't work like that - it needs to have, at least, a base of accumulated knowledge or well tested theory upon which to build hypotheses of that which is beyond observation, but connected with the stuff we can see.

As scientists have no knowledge of "the other world" and no way of observing or testing it, they are unable to comment authouritatively on way or the other.

I suppose this could be viewed as religions 'get out clause' in philosophical terms, giving religious people a form of diplomatic immunity from the scrutiny of scientists.

On this basis I would say that discussion is pretty futile, unless you are actively intending to convert somebody one way or the other.