Frankly I like my Sony Reader (similar to the Amazon Kindle) for reading on airplanes and for taking on vacations when I have several large, hardcover books to read.
On the other hand because of three serious short comings I think the price of ebooks is too high.
Shortcomings:
(1) When I like a book I pass it along to my friends. Since virtually none of my friends have Sony Readers or Kindles, I can't.
(2) When I have a physical book on my shelf, it is much easier to remember that I have read it and I am much more able to remember the subject and look up segments that I want to remember. ( I often order films from Netflix that I forgot that I saw already.)
(3) When reading a book with references, bibliographies and extensive footnotes, an eReader is absolute crap. There is no easy way to follow a footnote quickly and get back to where you were reading. The equivalent of keeping your thumb on a page.
That makes downloading an ebook worth about $5.00 to me, not the $10 current price.