You will be in a better position to raise that question when Science "discovers" the origin of the universe and our existence. That hasn't yet been done. Theories exist, but they contradict each other, and none has been proven. Indeed, by the usual standards of science based on theories subject to the result of direct observation (as opposed to inference based on incomplete data) there is good philosophical reason to believe that no such theory can be proven by scientific standards.
It is one thing to argue about traditional and largely metaphorical writings describing our creation being "disproved" by Darwin, but quite another to argue the absence of a creator.
You are entitled to your certainty, even if it looks foolish to a thinking person.