Except for some of the large screen TVs, I do not see much in a RV a thief would want. Are the going to steel the built in stove, or the 8 ft. fridge? How about that low end microwave, television or the built in 12 volt radio/DVD player?
They could go for my old levis and sweat shirts or my set of old pots and pans.
Most of my valuable items, camera, computer, kindle etc. are in the truck with me.
I would sooner think they would steel my lawn chairs and outside tables. Maybe the battery, shore cable or the whole TT for a met lab.
Granted some folks will steal about anything but I would bet most of the serious thievery happens when the TTs are in unattended storage.