If you prefer replace gravity by the Heisenberg Uncertainty Principle, the point remains the same.

As for convincing people in either direction. If you want people to abandon a belief in A you have to show them good reasons for not A, in some cases an outright proof. If you want people to abandon a belief in not A you have to show them good reasons for A, in some cases an outright proof.

My point isn't that you should believe in god. My point is you can't argue its irrational to believe in a conjecture (God) unless you have strong evidence of its falsity, which by many peoples standards you do not.