Miyazaki reportedly hated the ending and didn't want to have such a tidy solution, but needed material because he was greenlit for a movie and Nausicaa was all

Miyazaki reportedly hated the ending and didn't want to have such a tidy solution, but needed material because he was greenlit for a movie and Nausicaa was all he had. The other 3 books from the manga go into much more depth politically and spiritually, with a lot more philosophy about ecology and even what it means to be human.