I agree that there are always going to be a certain percentage of people who want their hands on a paper page... although, as the population shifts in age, that demographic will shrink... but I disagree in part with the portion of his/her statement where he said folks will want to be able to lay in bed and read their book. The truth is, it's just as easy, if not even easier, to read a Kindle in bed, especially if you furnish it with a light. Even without a light, it's just as easy and perhaps even more so to read a Kindle in bed than an actual book. You don't have to worry about the pages flipping over and losing your place, etc.
I fought the ebook revolution for a long time--thinking nothing could replace books--but since using my Kindle, have found I not only buy even more books (from an average of 2 books a week, I'm up to almost an average of 4--but it's infinitely easier to carry around and read in all kinds of places than an actual book. Like it or not, I think it's here to stay and increasingly, more and more people will gravitate toward ebook readers. Print won't disappear, and I think a time will come when the percentages of each will "settle into place," but it will take over more and more of the market. Print will always be here in one form or another, as there are many advantages of print that electronic versions can't satisfy and won't be able to in the foreseeable future--for instance, I mark books up for learning purposes (writing techniques) and while it's possible to skip around on a Kindle, it's also a lot of trouble to do so at the present time. When they come up with a way to turn down corners to mark places to go to quickly, that will be a big plus. There are other areas ebooks don't currently work as well as print, but I imagine they'll figure out ways to make them even more convenient in the future.