User blog comment:KillRoy231/How will Supernatural end?/@comment-108.36.76.116-20191120210418/@comment-108.36.76.116-20191204065253

Billie said all the books ended with Michael escaping Dean's mind and destroying the world except one. Guess what? Michael escaped and was destroyed by Jack. Sounds like this might be the ONE chance. Otherwise, to be on the bad paths: Other World Michael escaped and was destroyed by Jack, which sets off a chain of events that lets Adam/Michael destroy everything, or the book doesn't mean other world Michael, and somehow regular Michael gets in Dean and escapes to destroy the world. I'm inclined to think they are still on the one path. In the book Dean was looking at, he was not on the last page of the book. I can't say  if there was anything on the later pages, but I like to think Billie only showed Dean the page where he makes the box and the plan to be thrown into the sea.

As for the show being dark and full of damnation, dark yes, but also full of striving for redemption and forgiveness and not giving up. When one is weak and failing, another steps in to lift them up.