I find this interesting solely because some Fantasy books, while entertaining, are these exact same "practical" books, but packaged to be enticing and easier to swallow for some people. For some, they find it easier to read technical books on how to fix their problems, while other people find it easier to relate to a character's problems and use the character as a model example on how to fix their own problems. Maybe I'm over explaining what theme is but I found the comparison very neat as a person who doesn't read fantasy a lot because I struggle seeing the books as more than a story