Well, I kind of understand your feeling
There is this feeling about paper books ebooks don't have!
But more importantly, I think it goes for the features too. Real books are faster to flip, and highlighting with colors is also easy. Ebook readers tend to be slow, and most of them still don't have color display.
Personally I still like normal paper for textbooks/references, for the reasons mentioned above. Novels and comics are very enjoyable on my reader though. So up to this point, they fit each other pretty well.