Good writing should force a sensational burst of emotion out of our body. It's a natural high when a particular word or phrase skips through your veins and into your brain to omit reader endorphins. I believe these are symptoms of "reader addiction". Or you might be a bibliophile! Which isn't a bad thing, as long as it doesn't become obsessive and turn into bibliomania.
If you have to get to sleep or go somewhere, and you find yourself saying, "I'll just read one more chapter," but that one chapter turns into three-you might have a problem! Reader Addiction. Do you have books in every room or in your car? Do you carry a book or publication with you wherever you go, just in case you might sneak a time to read? Do you seek out a library on vacation? Whenever you see a bookstore, does it call to your soul to enter? When you're in a bookstore, does it fill your being with joy and excitement as if you were a child in an ice-cream store with 32 flavors to choose from?