However I grew up traveling to Powells books and living with physical books. I find that a good physical book has something that the digital version lacks. The physical form is a symbol for my memories of a book. I can simply pick it up and thoughts, themes and so forth come back to me. A quick flip through pulls out my memories.
For deep study I still find that writing in ad underlining a book increases my understanding dramatically. For awhile I composed notes at the computer while I read but this was time consuming and akward.
Digital books are disruptive. As Carr once wrote though, the disruption doesn't mean something isn't lost... often much is. We need to find the right ways to bring as much as that along with us from the physical world into the digital as we can. Perhaps I am too old already, but I am sure I will be one of the last with physical books as well as a continual user of the digital.