Here is an interesting article about e-books: LINK
Traditional books are slowly withdrawing. There is no doubt any more. It is true that the traditional book looks prettier and more attractive, but if one thinks of how many trees are cut down each day in the woods then it is slightly different.
Everything is just a matter of habits. I was very pleasantly surprised when I first touched the Kindle. When I saw that the screen no longer shines and the man can read all day without adverse effects on the eyes, I immediately fell in love in it.