Knives are tools and should be used. Recall a Bob Lovelace interview in a the 14 July 1980 Sports Illustrated:
"What's the point of a new knife in a museum or a cabinet?".....
"One of my knives in its sheath is about the neatest package in all of design," he says. "I make one of the finest tools in the world. A knife is as personal and necessary a thing as a man ever owns, and, by God, I don't have to apologize to anyone." In fact, if there is any apologizing to be done, Loveless figures that it is owed to him by customers who refuse to treat his work as something of utility, who put his knives in cases and "fondle and drool over them."
"Ninety percent of my knives aren't used!" he exclaims. "And, damn it, they should be out working. That's why I make them. When some old cowboy or guide comes back to me with a knife that's worn down to a nub and he says, 'That thing fit my hand better than any knife I'd ever had, and it worked longer, too,' that's fame. That's what I'm on earth for. A knife is a tool, and if we don't treat our tools with a certain familiar contempt, we lose perspective."
Personally, I won't own a knife I won't use. To each his own.