Over the years I've probably lost 6 Spyderco folders that I remember. And that's over the past 20 years or so.
About 4 years ago I found out that my G-10 Harpy got stolen. A lady I didn't know came to me and told me who it was that stole it and said that he sold it at a party for little more than the price of a pack of cigarettes
The worthless jerk didn't even know what it was worth.
I can live with the ones I lost by my own carelessness but to have them stolen is a completely different issue. Yeah it does give you a gut-hollow feeling to have something as nice and costly as a Spyderco knife lost or stolen. I'm a lot more careful than I used to be.