Also check out this guy he's kinda like the LTT of lock picking: https://www.youtube.com/user/bosnianbill
I'm not saying you're wrong, locks can ware down over time. But the mechanisms inside are a lot more robust than you are saying and it would take a lot of picks before any ware would start to show. It's not like you can stick a pick and the lock would stop working, you'd have to be really agressive with it and pick it for atleast 4 hours straight.