I started with and had one of these until I threw it away someday, because it seemed to be broken, I dunno why. Maybe it had could been fixed again. Anyway, about a year ago we had a small energy-collapse for several hours. When this happened I became aware of how much you depend on things which need electricity to run. I first wasn´t sure what happened. Maybe some kind of asteroid came across our orbit and we´ve been hit by an EMP-Pulse or something like that, which disabled all electricity on earth. Luckily it was just a small accident in our nearby power-plant, which could be fixed after a couple of hours. But all in all it was disturbing.