A "god" in the Judeo-Christian-Islamic tradition is highly unlikely. The "superbeing", full of wrath & vengeance seeking to have it's ass kissed it quite a juvenile concept.
A "deity" may, in fact, exist, but, as stated above, there's really never been ANYTHING to validate it. Generally, man's ego is what keeps this idea alive....that we're "so important" that a superbeing specifically created us....nonsense.
However, the forces of evolution, the births & deaths of stars, the big-bang, all of these things may be a 'god' in & of itself.....depending upon one's point of view. Or, maybe not.