Jeff Gomez, in his series on owning a Kindle, voices a preference for multiple gadgets each doing one thing well:
One thing that I don’t mind about the Kindle is that it’s an extra device. I used to think that I wanted an integrated device — one thing that did everything — and that I wouldn’t want to carry around yet another device or gadget. But I actually like the fact that the Kindle is (more or less) just a device for the reading of content. Maybe this harkens back to the fact that every book is a destination; you get into bed and pick up a book because you want to read. You don’t pick up a book to take pictures, record video or get your voicemail. So the fact that I don’t use the Kindle to play solitaire is fine with me. True, that means I can’t read something if I leave the house and have just my cell phone in my back pocket. But then again, a cell phone screen is too small, and most books are too big, so carrying a Kindle seems the right compromise.