Its widely accepted that the Big Bang was almost beyond doubt the beginning of the universe. For that event to occur it is almost certain that there are states of existence where the laws of physics as we understand them don’t exist. Therefore anything has to be equally possible including creation by a higher being and the random event theory. Therefore on the religious front you are all equally correct, or if you prefer incorrect? Just saying.
Of course we don't know everything about the universe, nor do we as a species fully understand everything we do know. However, there is enough scientific evidence to disprove the creationist theory in which everything was made in 7 days 8000 years ago, no scientific evidence that there was ever a great flood and sufficient historical evidence to call into question the accuracy of the events described in Exodus.
Moving on from the Old to the New Testament, again there's no actual historic records confirming the existence of Jesus and the accuracy of the Gospels has to be questioned since they weren't written down until many years after the events described in them were supposed to have taken place, and when they were they have gone through so many translations, edits and rewrites as to be very far from the original texts. It's the adherence to these type of dogmas that I find particularly mindboggling.
Forgetting formal religions, are there higher powers out there that we don't know about? Who knows, but I'd suggest that in an infinite universe it would be the height of arrogance to assume that we're the only intelligent life in existence. If I won't rule out the existence of alien life then that by definition includes the possibility that there could be lifeforms out there in a form that we can't even comprehend. Do I think those lifeforms made us though? I think that's highly unlikely, and I certainly don't think they would give a s*** about us as individuals to such a degree that they'd watch us to see what we are up to each day!