If “useful” means “profitable” in this context, then an argument could be made that reading nonfiction (especially business, training, entrepreneurship) books might be more useful than reading fiction. read more
More people read short, non-fiction stories than short, fiction stories. My first book And Then I'll Be Happy! is a collection of true stories about why women find happiness so elusive. read more
In fact, fiction seems to be more effective at changing beliefs than nonfiction, which is designed to persuade through argument and evidence. Studies show that when we read nonfiction, we read with our shields up. read more