Probably not in regular day-to-day life, as long as you have dispoable income to replace the sharp ones when they get dull. Knowing how to sharpen them could be indispensible in an extended use situation, especially if replacing them becomes difficult or impossible.
Knives dull as you use them. A dull knife is a dangerous knife. If you don't use knives much I guess you can send them out to be sharpened or replace them, but I prefer to save the money and time by keeping my knives sharp myself.
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