Interesting. I personally do not like to read on the computer. I find it more tiring on the eyes, less convenient (I can’t sprawl out on a couch, for example, even with a laptop), and less pleasant (there is something about the change of pace I like in reading a book; I use a computer all day at work and sometimes at play—books provide a nice way to get away from it all). This isn’t to say, of course, that I haven’t done it. Particularly with harder to find books, I have used gutenberg, archive, and sacred-texts. I just don’t like it as well.
Maybe a reader would be better. I don’t know. At the moment, I am not really inclined to try it, though. :)
I drive for a living and have found Audible.com to be a splendid choice. You download books to an mp3 player and off you go... I’ve been doing it for years and they have more books added to their already large selection all the time.