Well, one doesn't exclude the other. For example: many people I know prefer the touch-and-feel of books, which is something that I get. But I also find books quite inconvenient, especially in low-light situations or when I'm traveling. For those use cases, I find my e-reader 100 times better. As an alternative, when I cannot pack a lot of stuff but still need to be productive while on the move, I don't mind to occasionally use my iPad as a reading device, especially after having applied a Paperlike screen protector. I also find it quite nice to make notes with the pencil or to highlight sentences/paragraphs that I find particularly interesting. I would feel bad to do the same on a book, to be honest...