Does anyone else do that?
Anyways, I think that fiction is actually more beneficial to learning. Why? Because fiction books always make things up. This triggers the reader's imagination, and makes the reader possibly more creative. With creativity comes problem solving, with problem solving comes organization, with organization comes responsibility, and with all these, you could become smarter. I'm not saying that nonfiction can't make you smarter; I'm just saying that it doesn't seem as effective. Sure you could fit a ton of facts in that book, but after the reader finishes the book, what do they get out of it? Most of the facts that the writer researched and wrote in that book would be forgotten, unless if the reader had an amazing memory. With fiction, there could be facts subtly inserted within the text, unlike nonfiction's bluntly stating the facts, and it usually is easier to remember. When the human brain is fed small amounts of information in a long period of time, they are more likely to remember more information than if the brain is fed a whole ton of information in a short period of time. Its just how people work. Unless if you an extraordinary memory.
Also, I haven't looked up any statistics, but I bet that most people take out more fiction books than nonfiction books.
One more thing. Without fiction, many of today's inventions, or words, might not be here in the twenty-first century. Everyone has to remember science fiction's insane predictions of the future Dr. Seuss' crazy words!
So, yeah. Fiction's amazing, and to me, is more interesting to read and beneficial to learn than nonfiction (but my parents still won't let me take out all of those fiction books...).