Ah, but you see that all happened after "The Fall™", when our ancestors decided they'd rather find out for themselves what 'Good' and 'Evil' were rather than have it imposed on them by an unstable authority figure.
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.'