I lost my job as a printing press operator because of ebooks!!!
Just kidding it was more for stupid business decisions than anything. I think ebooks have their place. I have seen a few ebooks devices that I like a real lot, but I haven't gotten one yet. I have used ebook readers on my laptop, my wife's blackberry and my palm and they work really well.
If ebook devices are durable enough, and secure enough, I think they could replace books. I like paper as much as anyone, and I spent 15 years printing on it, but ebooks can be as portable, more durable, waterproof etc.
If the ebook setup is similar to steam or something like that if you lose your device you simply download a new copy. This makes the concept more secure in that way, I can't get additional copies of my paper books without paying full retail, for new.
Amazons problem with copyright on one book caused them to remove that book from peoples devices, but those problems will be ironed out in the future, this is still a new concept for a lot of people.
http://www.techdirt.com/articles/20090717/1559425587.shtml