Jonathan Franzen, although not yet out of his forties, is looking to grab Andy Rooney's Curmudgeon Laureate title. To put it mildly he isn't a fan of e-readers. In fact he thinks that e-readers are "damaging to society," "not for serious readers," and "incompatible with responsible self-government." He also thinks that there is not the permanence with the digital as there is with the paperback.
I for one don't think that acidic paper filled, mass market paperbacks are a very good standard bearer for permanence, but it is true the digital is ephemeral (unless you posted it on Facebook). I actually don't read e-books. I like the analog book. It is comforting to me. I view it as an artifact, something I like to see on my bookshelf ready for a thumb-through for some elusive quote or fact. But on the other hand I imagine that I will switch to an e-reader one day. The technology is still in its infancy and even though I find them clunky and impersonal at the moment, they will soon get better.
Now if you want to read a great response to Franzen, go over to The Crux and read the smart as a whip Carl Zimmer's Ebooks:More Boon to Literacy than threat to Democracy.