Evidence is only a problem for someone who doesn't have any. Hence the need to bluster about how silly your opponents are for asking you to provide some.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'