There is some ground between being religious and being an atheist. Being an atheist implies some degree of faith. The question whether there is a God cannot be answered within our current knowledge (and it may pretty well remain so until the end of our universe). An atheist firmly believes the answer is "no". An agnostic acknowledges we are unable to answer the question. Maybe in a million years, maybe never. Interestingly, the only answer science can give to questions like these is on the lines of "we can neither prove nor disprove this hypothesis".
As I use to joke, I lack the faith required to be an atheist. ;-)