Determinatio, the debate of the existence of a Higher Power has been evident since the beginning of time by millions of opinions and reasoning. I really do not care to discuss that in any great lengths as it would involve too much typing, (not to be funny here though), voice/in person debate is another matter.
Have you ever heard of Lewis's trilemma or Pascal's Wager? I do not have a degree in Divinity nor am I a Scientist like Darwin. I simply apply reasoning that of course you do not agree with. I'll leave it at that if you don't mind.