My one Granddad was a machinist, all his tools were sharp, my Dad followed in his footsteps- sharp but not worn out- i have the Case belt knife he carried through WWII and used in his shop for years, except for a very tiny bit of tip on of the grandkids snapped off- its still in great shape
I learned early on- its easier to keep a knife sharp than to get it sharp
i have a stag handled Solingen steel bladed knife I started carrying as a boy scout. It got really dull once- a professional knife/scissors sharpener said it would take too long for him to get the edge back at his normal rate. I got a set of stones and worked on it for a long time, once it has an edge it only needs a light touch up after each deer or two.