Hal: I don not believe that the death of one man can doom the galaxy. Odin, great as he was, was not a god. There must have been another way. What if the Aesir had just destroyed the planets that had most of the Heloki and Jotans on? Are Hel or Fenrir Imortal?
The problem with prophecy is that its often self fulfilling, what if there was another means of defeating Loki and it was on one of the planets destroyed?