The issue is thinking average keys and locks are anything but a mild inconvenience. Spurned lovers/friends/coworkers could easily "borrow" a key and get it copi

The issue is thinking average keys and locks are anything but a mild inconvenience. Spurned lovers/friends/coworkers could easily "borrow" a key and get it copied. They could also just get a screwdriver and a rubber mallet and remove the lock, or smash a window.