I bought my Cutco sportsman in 1975, have had it sharpened once, maybe in 1985 but it still is sharp enough to whack off a finger if I'm not paying attention.
8 years of hard river use, another dozen or so years boating, and the rest as a barbecue knife.
I need to replace the scabbard, but the knife itself is as good as it was the day I bought it.
In it's day it cut a ton of rope, patch material, wood, even wire. And yes, we used our river knives for cooking back in the day, you know, before we knew much about germs.