Considering how the little people in the Imperium suffer under oppression and neglect, it would be reason enough to throw away their faith in the Emperor and succumb to the temptations of the Chaos gods, be it in insanity or otherwise. Like 'deals with the devil' in the real world. The possibility of ultimate power can generally be quite desirable.<br/><br/>Oh? Who am I?  ::) Im just passing through... Maybe.  8-)