Whatever you're learning about the real world from fiction, wouldn't it be more effective to read a textbook instead or something?

Let's assume for the sake of argument that your time would be better spent reading a textbook. Getting yourself to read textbooks is harder than getting yourself to read entertaining fiction, so you may not get as much benefit from textbooks even if you get more benefit per hour.

Also, it sounds like you're putting too little importance on fun. Fun is important.