I agree with you on some points. I think electronic books in general are a bad idea and I will never use them if I can help it. I spend enough time on a computer, I don't want to do my studying or reading for pleasure on one.
Books are portable, can be written on for notes, can be saved and passed on to others. With e-books, your access is limited sometimes, so you cannot keep the text for reference later on. I can't see convenience and cost of e-books ever outweighing these factors.