The Guardian had a great
article about why eBooks and other reading "gizmos" (devices) won't beat printed books anytime soon.
The article was well written and pointed out some interesting facts about the longevity of books. This is exactly something I've been framing in my mind as to why I'd rather be writing books than writing software. If I could support myself as well doing the formers as I do doing the latter, I'd change my line of work in an instant!