I've met him (Mr. Reacher) and would keep me out, as would my Chessie. I also lean towards less worry about theft and such, not because the threat isn't there, but prevention is too often just a smoke screen. Breaking into an Ollie is a simple task, (not unlike most RV's), therefore I prefer to leave little of any worth inside. Few thieves are going to take "normal" RV camping stuff. I don't leave valuables, wallets, and such in the RV, put $$ electronics in the truck, and don't worry about it. Out of site - out of mind, don't flaunt it.
I tend to rely more on observation and common sense, sometimes just paying attention reaps big rewards. I must admit, I carry a firearm much more than I once did, not around camp, or hiking (non bear area), but I have one handy - if it became necessary. Yes, I'm probably too trusting, - 30 years of camping from here to there and back, not really had an issue.