A complete lack of evidence is our criteria for a thing’s nonexistence. 

 

Why do we believe that invisible elephants do not exist?  There is no evidence.  Why do we believe that humans have never been to the center of the earth?  There is no evidence.  Why do we believe that superman does not exist?  There is no evidence. 

 

There is no evidence for God’s existence.  Why use a different ruler for judging God’s existence than any other concept?