We despise all reverences and all objects of reverence which are outside the pale of our list of sacred things. And yet, with strange inconsistency, we are shocked when other people despise and defile the things which are holy to us.
I have come to the conclusion that whether or not a person is a religious believer does not matter. Far more important is that they be a good human being.
Where did God come from? If we decide this is an unanswerable question why not save a step and conclude that the origin of the universe is an unanswerable question.