On the one hand, I love ebooks, for all the stated reasons.
Small and light. Adjustable fonts. Lighted reader. Don't take up any space. Instant delivery. Spine never cracks, paper never tears. As long as an e-reader displays the file correctly, the book will always be in perfect condition. Easy to backup; don't lose your books in case of water, fire or smoke damage. Cheaper than paper books (if you know where to look), or even free.
So many advantages over paper.
On the other hand, I feel something is lost when reading ebooks, and I become greedy and Wanna-Have when I see stuff like this (hardcovers and such):
http://www.barnesandnoble.com/s/?series_id=577536
Way more beautiful than any ebook ever could be.