By all I meant some but I get your point.My dad talks about this stuff all the time.
The logical, just, scientific, way to go about this would be to assume that the theory declaring the existence of this magical being is false until it's actually proven. Either you can disagree, which basically means you're arguing such silly things as that, say, 'atheism is a religion' and 'religion is right until disproved', or you can draw up some proof. Or you can be ignorant and go away, I guess.