You've apparently not heard about BMW's being taken in 3 minutes or less.I find it surprising to hear of an unauthorized entry of a locked vehicle via a cloned remote.
What the chance of a snooping device capturing the remote signal?
I'm with you, I RARELY leave anything in the vehicle, and if I do it's hidden in the console or under the rear load floor. Out of sight, out of mind.I locked my keys in my old car. Security guard was able to open the car within a minute or so leaving no damage whatsoever. So what's stopping thieves. Don't leave stuff in your car people!
All that is left in my car is about a dollar in quarters (in plain sight too), my manual, and some gum. Come steal it =P