I have plenty of ebooks, and the main advantage there, for me, is the info density. But there are still advantages to paper books. For one thing, I can't have my paper books revoked after purchase, something that happened to me more than once on amazon before I wised up and started downloading my books to my PC (before they went and made that impossible). I don't shop at amazon much for anything these days but it could happen anywhere with DRM. (which is another advantage; I don't have to waste time stripping the DRM off of paper books).

For another thing, I don't need to worry about charging a paper book and I don't need to have a battery pack and cables to read a book if the power is out or I'm somewhere without electricity. That's probably not a concern for most of the folks on HN but I personally prefer having a reduced infrastructural dependence for certain activities.

Reading on a screen also destroys my attention span. Again, that's not necessarily a common concern for most people but if I'm reading anything heavier than Raymond Chandler, I feel like my brain turns to oatmeal on an e-reader or a computer screen.