My new luggage has tsa lock which I thought naively was a good thing. But having second thought after reading other's experiences. Nothing valuable in my bag, have free baggage check-in, just will zipper it all like I always did on short flight and forget about the tsa lock. Had a brief moment of "stress" just thinking about what "if" I can't open it. Travelling twice a year is stressful, why add another component. Has anyone else made similar decision? just zip it?
One advantage of the TSA locks is that it is easy to get spare keys for them. Look at the number on the lock (should be TSA00n with n between 1 and 7) and then search ebay for keys.
Or go to https://github.com/Xyl2k/TSA-Travel-Sentry-master-keys where you can download the files to print a key yourself (or have someone print one for you).