The incompatibility between science and religion does not stem from the possibility of the existence of a god, it comes from the fact that science is a method that does not take into account your feelings or opinions. What is proven by science is still true wether you believe in it or not.
You reasoning about creation could be extended to anything without any fact supporting it, so it cannot be proven wrong in return either. You can modify your belief at will to make it fit with what you see. Now if tomorrow we have proofs that Humans were created by an ancient civilization of giant slugs, you will say "yes but what if God created the ancient slugs to create us in turn ?".