Well do not lose hope; the way I see it, is that even if Disney is making stories end happily ever after, it may spark enough interest for a viewer to search the original work, something that he would not have done.
I've read all the books, and I loved them (maybe aside from one.) It's the kind of book that felt satisfying.
As for the movie, it may not be the best movie out there, but I loved it for the fact that it does make one child-like.
I remember seeing the live series of Sinbad when I was young; it was showing up on a kid channel...and the women didn't have that much clothes on....wonder how it got on that channel in the first place.