How long should a particular product last? Companion question, how long should one wait to replace a particular product?
This past weekend I finally replaced my 19 year old Sony alarm clock radio with a new Sony alarm clock radio. My old alarm clock, which was at least 19 years old, still kept time but the radio tuner no longer worked and I didn't care for being awoken by the buzzer. So we stopped by the local Best Buy and I picked up an almost identical style Sony alarm clock radio (after reviewing all the new fangled options - CD alarm clock, IPod docking station alarm clocks, etc.). I was pleased that I was able to pick up a similar alarm clock and pleased that my old alarm clock lasted so long.