Thing about the agree-to-disagree compromise is it only becomes viable when both sides have claim to a factual position, however limited. The question of existence regarding god(s), on the other hand, is strictly a binary one: there either is at least one or there is not. Thus fifty percent of your exemplar dialogue has to be wrong. We can agree to disagree on the opinion regarding such a question, but then you run face-first into Min's question.
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.'