Anyone is entitled to refuse the accept the burden of proof; all they need to do is to renounce whatever claim they're making. I can live with that.
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.'