I have a ceramic jackknife that I mostly use when working around electricity or electronics. It is quite sharp, but it's ground to a relatively obtuse bevel, which makes it not so useful as a kitchen knife.

I'm certainly working on instinct, but it feels to me like a disposable product, which I hate. Yeah, I know, it's supposed to last for a long time, but any damage is likely to render it unrepairable, thus making it disposable.