You laugh, but they spent the better part of 10 years telling a dark story, only to end it with "diamond rain" and "heaven" when they made a point never to point out blatantly the mention of heaven and hell in their music. 90% of their gimmick songs were about morality, but not necessarily God and Satan. They've made mention as to why they did it that way, and the basic thought behind it was they had no idea how to end an era of darkness with any great effect. They chose the safe route.