It's used because it is the story. The monomyth.
Yes, I've read Campbell.
But my original complaint was about the one
fated saviour (the whole "you have a destiny" thing), which is
not a required component of the monomyth.
That's not saying that D&D can't use some other story, but there really aren't very many (I can't recall the number someone came up with, but it was in the teens I think).
Yeah, yeah. There are seven stories in the whole of literature. And one of them is "Independence Day".
The problem with that theory is that in order to fit everything into their seven categories, they have to simplify stories down to the point of uselessness.
It's kind of a pet peeve of mind when people talk about things being over-used, trite, whatever, when those are usually that way for a very good reason that is inseparable from the human condition.
If they simply go with "what works", they'll have the Hero, the comic sidekick, and the love interest set out to defeat the singular Dark Lord, who is seeking to destroy/take over the kingdom/world. They're best means to defeat him will be to track down the McGuffin by following a convoluted sequence of clues, all while being chased by the Badass Lieutenant. Unfortunately, things will go horribly wrong, meaning that they face the Final Confrontation with no real chance of success until, against all the odds, the Hero finds a way to come to terms with his destiny and remove the McGuffin from play, thus defeating the Dark Lord. (You remove the McGuffin because the lesson is that the power was inside the Hero all along - the McGuffin was actually helping the Dark Lord.)
The problem with that is that they don't need to bother making the film - it already exists, and it's already called "Dungeons & Dragons". And it turns out that blindly doing "what works", ironically,
doesn't work.
It matters a hell of a lot less
what story they tell than it does
how they tell it. And my preference would be that they stay away from the "fated hero saves the world" storyline, because it's been done to death in fantasy. I'd much rather see that heist movie people have mentioned up-thread, or something in the vein of "Fast & Furious".
But given that the script was written by the guy who did "Wrath of the Titans", and given that this is a fantasy film and there are expectations, I'm very confident that what we'll
actually get will indeed be yet another fated Hero saving the world from a Dark Lord. Complete with comic sidekick and love interest.