Alison,I know it's all held remotely at Amazon and heaven forbid it would ever fold but stranger things have happened. I'd hate to think it might be possible.
I sometimes worry about that, too, though I doubt Amazon is going anywhere any time soon. Film and history books that I want in my library, I buy hard copies of. I use the Kindle for books I don't necessarily want to own but do want to read. That way, if something ever happened, I wouldn't be completely heart broken at losing my Kindle files.
Of course, my attitude about that could completely change.......
Kingme,
For travel and reading, it can't be beat!
I got the Kindle case with the reading light which has come in handy not only on planes but also in Starbucks, restaurants and bars. I can read while waiting for friends to show up.