That's an interesting point about Marvel movies! I hadn't really thought about them being a book adaption per se, but it makes sense! I think that the best adaptions get people interested in the source material. If the renewed interest in superheroes is any indication, than Marvel movies have done their job
I think that the moment we're in culturally regarding superhero and comic book movies is really interesting! I started reading comic books when I was a kid and it wasn't a popular thing to do. But now, lots of people have developed an interest in superheroes because of the success of Marvel. It's been awesome to see how many people have found a new hobby, all because of comic book adaptations!