I did not own one for ages. The first reason was personal: driving the car was a kind of Sabbath for me, with nothing to do but listen to music and watch the scenery. Why muck that up with a ringing telephone? The second reason was ecological: if I detested the microwave towers that were springing up all over the countryside, then why participate in their proliferation? The third reason was numerical: I could barely juggle seven numbers, much less ten, but every new cell phone in the world nudged me nearer the necessity of dialing ten digit telephone numbers with weird new area codes.