Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
But they were all "one sentence" back-stories. Back stories that mean more if you've seen their movies. If we hadn't have had their movies "one sentence back stories" wouldn't have very well established exactly who Thor was. Other than just being a god from legend, we wouldn't know who he is as a person or how he had to grow as one to become the hero he is.
Just because it's futuristic doesn't mean it's practical.