I had a friend get me a set of lock picks a couple decades back. I thought it would be hard, but it was actually pretty easy. Over the years, I've used them for all sorts of stuff. Folks don't actually ever call the cops when you pick a lock, either.
I once spent some time picking my parents front door lock. I had a mohawk (it was the 80s), and was wearing grubby painters clothes because I was supposed to go in and paint the bathroom. They were in a seriously upscale neighborhood, and not a single person called the cops.
It's a good skill to have. When I nursed, and one of the nurses lost the key to get the sharps container out of the bracket, I got it out in seconds. Hell, when the med passer locked the keys into the med room, I got it out.
The scary thing is, I'm not good at it. I'm barely passable. Locks just aren't as secure as you'd like them to be.