Lets apply Hawking argument against God.<quoted text> The rules of logic and math do not apply to a singularity
of infinite or near infinite gravity *time does not move,
so causality has no meaning, but quantum effects are not bound by time. So The universe can create itself with gravity alone.
Causes must precede their effect in time (Except gravity)
There is no time prior to the beginning of time
Therefore the universe cannot have a cause.
If that rules out God then it must also rule out gravity. Atheists rule out God but do not rule out gravity.