Just imagine finding a USB stick on the street, all crushed by passing cars, and taking it home, repairing it, and discovering that it contained the private key to thousands of BTC. Wet dream?

Has happened to me once (sans the BTC). Found the remains of a USB stick on the street (only the PCB had remained, and badly damaged). I tried to repair it, but couldn't. Could it have contained Satoshi's coins? No one will ever know.

I'm paranoid like that...