Micarta has a rated use life of about 200 years. I would use it for every handle on every knife I make, if I could (well..I guess I could, but it doesn't fit every knife). There is no more durable handle material, IMO, except maybe G-10 or Carbon Fiber, but G-10 isn't nearly as pretty, and carbon fiber is hard to find in the right thicknesses, without jacking the price of the knife through the roof. It's pretty and it's strong, but really only great for folding knives. (Just my opinion) Micarta is, to me, the ultimate knife handle material. Polished, it's gorgeous, durable, and interesting. Bead-blasted or sanded, makes a non-slip handle beyond compare. I bent over backwards to get a Kiwi, and I like the Kopas a lot better. Now I don't have the money to buy a Kopa. C'est la vie....my knife addiction has kept me broke for a while.