1. E-readers give you too many options. Font size? Serif or Sans-serif? Words per page? You make a change, and then you feel like the way it was before was the proper way it should look, so you change it back, and then feel the same way about how it was after the first change. How am I to be expected to make decisions like that and still enjoy whatever I'm reading?
2. I do judge books by their covers.
3. The e-book titles are often not really that much cheaper than a physical copy. Especially if it's already out in paperback.
4. In my mind, at least half the point of reading books is really to be seen reading them. But seriously, when you're sitting in a coffee house, or on a park bench, or a plane with an e-reader, no attractive girl ever comes up to you and says: "I've been thinking about reading that for awhile now. How is it?" or, better, "What do you think the attraction between Basil Halward and Dorian Grey that he talks about in chapter 2 reeeeeeally means?" It just doesn't happen.
5. Physical copies of books just give me a feeling of contentment that I can't quite explain. Your iPad, Nook or Kindle may be a source of envy for others around you, but regular books just have a spark they never will.
6. No one knows what you're actually reading––so who knows what they imagine you might be reading? It's a terrifying thought. It really is. It's like going to a high school football game with a dark tinted nalgene water bottle and taking a gigantic swig out of it every time there's a touchdown. It doesn't matter if it's really water. No one will think that. Likewise, when I'm in a public place with an e-reader, I may be reading something by C.S. Lewis, but I'm absolutely convinced everyone thinks I'm reading E.L. James.
7. Book-burnings are so much less exciting.