Mechanic put my wheel lock too tight

Lost the key (again) on my Mustang. I hammered on a 21 mm socket and pulled it off in 10 seconds. If some schmuck like me can do it, a car theif can do it even faster. Tossed the lock nuts and went to regular nuts. I figured they were a waste of money. Oh, and I stuck the socket in a vice and hammered out the lock nut.