Most people forget to factor in setup and cleanup time. Digging out the sharpening stones, finding the right angle, then cleaning up all the metal dust. That stuff adds hours. A jig or guide can cut the actual work in half.
Switched to a cheap clamp guide from the hardware store and it changed the game. My kitchen knives went from dull to sharp in like twenty minutes instead of a whole afternoon. Still get that hand sharpened edge without the headache of freehand guesswork. Total lifesaver for someone who just wants to cut veggies without a whole project lol.