I recently acquired a Kindle; not the most sexy of electronic devices, monochrome with a little screen and lousy book navigation. In fact a tiny girl of about two who keeps coming to investigate it when I'm filling in time at my granddaughter's gym class thinks it is the most useless and boring Nintendo DS she has ever seen. Nevertheless it has its uses. I can download for free very imperfect scans of old books that would otherwise be prohibitively expensive, or unobtainable. I can also download recreational reading without filling up my ever decreasing bookshelf space. It's great for reading in bed, because if you fall asleep, it does too, and it doesn't lose its place. It does have the unfortunate feature than when it goes to sleep it displays a grainy old picture of some defunct author. It is quite scary to wake up in the night and find Harriet Beecher Stowe glowering at you over the bedcovers.
There are some books I think I would always prefer to be in paper form, such as dictionaries, reference material where you might want to have six books open at the same time, or highly illustrated material. I once wrote a review of an electronic dictionary for a journal of online and multimedia matters. The editor said she would never have believed a review of a dictionary could be so funny. A representative of the dictionary wrote an indignant letter with a long list of what he claimed were factual errors or unknowable things, for all of which I was able to prove him incorrect. The journal went belly up, but I don't think that was me. Hey, all I did was speculate on what kind of book you could write with a dictionary that included esoteric Australian slang and a rather peculiar assortment of proper nouns, including the names of French philosophers and nuclear physicists. Then I said I preferred a dictionary with pages.
I suspect (Nostradamus moment!) that paper books and electronic books will co-exist for a long time yet. Publishing houses will have to get out of their 19th century industrial mode of production and distribution or they will go the way of the dodo. At the moment, it is faster and cheaper to order a paper book online for yourself than have a bookseller do it, and if publishers don't provide electronic services, they are doomed. But for some things, we just like our books.