We read for many reasons. I think one can learn things from even the most terrible of books. (e.g. Mein Kampf or any other over-the-top propaganda) Plus, reading is a muscle. I know so many folks who tell me, "I used to read, but now..." etc. etc.
So sometimes we read to learn, sometimes we read for sheer fun, I think what matters most is the *habit* of reading, which should be kept up at all costs....