Are there good reasons to believe in a God? And good reasons not to do it? Is God within our reach at all? If God exists, he is of course quite independent of whether we believe in him or not. Us denying Gods existence does not invalidate the possible reality of it. And a believe in God is not in itself a proof that he is real either.
“The heavens declare the glory of God and the firmament announces the work of his hands … There is no speech, it sounds no words and no voice can be heard. But the message goes over all the earth, their words to the end of the world.” Psalm 19, 2-5