Originally Posted by
jphamlore
My theory is Nick Fury told Thor Odinson the truth, that he was incapable of defending Midgard. That shattered Thor Odinson's identity, what he had been living for. This was very recently after a storyline in Aaron's Thor where the Odinson had failed to stop the destruction of Broxton, Oklahoma. Thus the Hammer passes to another, who many have guessed is a native of MIdgard, Roz Solomon, a S.H.I.E.L.D. agent who will fight for the environment and Earth against Roxxon and it's CEO Dario Agger / Minotaur.
When the Odinson had resolved this was the moment and the hour he would die in battle and go to Valhalla, he had relieved himself of his burden of not being able to defend Midgard, and thus became worthy again.