Butchers use them...carving the roast dinner you might use one...but how many of you use a sharpening steel to put that final edge on your blades. They can be a little hard on the blade so I guess your not going to use one on a custom knife, but on my work knives that I use hard every day I find nothing gives me a better working edge. I know I'm new around here so maybe I've missed you guys talking about them.