So you like to cook? Well then, you need to keep your knives the sharpest they can be. It helps to have quality knives to start with, but knives, unfortunately, don't stay sharp forever -- most of them anyway -- and when that edge starts to dull you need some first-aid fast. Sharp knives are safer knives. They're not going to slip and slide on you and cause an accident. I've had my Chef's Choice sharpener for five years now and they've been worth every penny.