Why to keep using a lock on checked baggage

Lately I came to the conclusion that though the lock I use isn’t a TSA-approved one, it’s useful as a theft deterrent to those handling bags in its long pathway to my hands at the end of my trip. In the rare times TSA will check my luggage, sure, they’ll break the lock, but all of the other times, my bags will be safe from the wandering hand, hoping to a score a little something. My advice is all more pertinent when I read articles like this one where an airline employee was arrested for stealing.