User blog comment:IceFireWarden0/Asgard- Expectations For Rick's Norse Mythology Series/@comment-24466242-20140125170433/@comment-3146930-20140513013632

I think in the comics they explain it as them being in a type of loop, at least from what I read. For example, the Odin from the comics isn't the first Odin. The original Odin died at Ragnorok and then the cycle started again, with a new Odin being born and a new Thor and this cycle just keeps going. They kind of change this in the movie, going with the whole "They are just that old" idea, with Thor being the original Thor from mythology. That is just what I read however and I could be wrong.