Don't ask 'is there a creator god?' - which is absurd, because everyone who has thought deeply about this knows that there must be a creator of some kind, even if an impersonal principle - but instead you need to ask what kind of god created all this?
Life is (in part) a process of discovery about god, and this discovery is something that happens by communication between the self and god; and that entails disovering the self - the real self - as well as discovering god - both of which are within.
(The creator god is not only within us, of course - he is the creator, after all! - but a part of god is within us; like a small but perpetually glowing cinder - this inner presence is what makes certainty possible.)
The only way to know god with that certainty we need, is to know god directly: to feel god (and, of course, to acknowledge the reality and truth of that feeling).
How important is all this stuff? Well, you tell me! Do you believe Life is something we cannot know, and god something we cannot evaluate - so, therefore, we should leave this whole thing undecided, don't bother ourselves, and just 'get on with it'. But get on with... What exactly? Get on with what?
NOTE: The answer to 'what kind of creator?' does not come from drawing up some kind of 'balance sheet' of good and bad things, as we crudely and ignorantly suppose them to be. Of course we cannot really know what is good and bad in terms of motives and long-term effects - but even if we could this would be a ludicrous exercise - is that method how we know for certain a mother's love, a wife's, a son or daughter's love? By compiling a ledger of hugs and treats minus sharp words and slaps?