You could ask the exact same question about God, since he is allegedly everywhere.
Not really, but I don't believe God is "everywhere" anyway, so that's a moot point.
This is the problem with being unable to imagine a reality outside of the one you personally believe exists; you're incapable of having an actual discussion about the merits of your viewpoint because you are unwilling to accept that you might be wrong.
I am willing to be wrong, but I don't have a reason to believe I am wrong. No amount of science can adequately "test" the existence of God anyway, so its not even a question that science can empirically address.
I think it boils down to whether or not one has reason to believe in a god/God.
are you willing to accept that he (or they) might not?
"Accept" suggests that a god doesn't exists and I may as well accept that reality. I will need a reason to not believe, to be honest.

