Haha. Can't really prove His existence either way. I myself have no personal eyewitness accounts of anything miraculous nor visions nor hearing from God, all of which would be explained away as hallucinations anyway. If someone believes in God it really is because of faith. Whether it's a lack of critical thinking or whatnot that's real the only explanation, cause trying to prove the existence of God isn't going to happen. People either believe or don't believe. Simple enough, just a touchy subject.