The book is like the spoon, scissors, the hammer, the wheel. Once invented, it cannot be improved. You cannot make a spoon that is better than a spoon... The book has been thoroughly tested, and it's very hard to see how it could be improved on for its current purposes.
But the purpose of a story is to teach and to please at once, and what it teaches is how to recognize the snares of the world.
I am not on Facebook and on Twitter because the purpose of my life is to avoid messages. I receive too many messages from the world, and so I try to avoid that.