Hey Kitten, you callin me mad, eh? Don't make me unleash the krazy kitty from within, lol.<quoted text>
Because belief in something that is not demonstrated or based on evidence is imagination, asserting that it's real beyond your imagination is the very definition of delusion. People suffering from delusions are irrational and illogical, the delusion makes it impossible for them to see past the delusion.
But why can't there be a 'God'? Why couldn't have something created us?