Craziness. It's just so easy to get away with this stuff these days, it's worth the risk to be ballsy like that i guess. Man. Sorry for the invasion (that's what sucks more than the material stuff... most of which can be replaced). Pretty soon the thieves will just rip your pants off and run instead of trying to pick your pocket.
I'm only 24 and i remember when we used to leave all the doors unlocked back home... all day long even when we weren't home. You just never had to worry about crap like that.