Which is the atheistic viewpoint. Atheism is the lack of a belief in God, not the belief that one doesn't exist. Being an Atheist doesn't mean you know god doesn't exist. You don't except either side because there isn't any proof. However, the side that cannot demonstrate that God doesn't exist really doesn't matter because God is an irrefutable hypothesis. It cant be proven wrong. So, in order to judge its credibility the side making the positive claim must meet its burden of proof. Not accepting the claim until that happens is the neutral position.