Steve, I believe in unicorns. For argument's sake let's say you don't believe in unicorns. That would make you an "a-unicornist". According to your logic you have just proved the existence of unicorns by not believing in them. This is known as the "deontological argument" in logic and it is ultimately fallacious as I have just demonstrated above. Nice try but no brass ring this time.

God cannot be proved by means of rational argument. Period!