Oh I completely agree and trust me its crossed my mind... Fortunatly I live in a good town with minimal crime and if it should occur then thats what insurance is for. I just remove the screen when I am going to leave the truck parked somewhere for an extended amount of time like I did over the past week takes only about 5 minutes.
I just really like having the big screen for when I want to web surf or watch movies. I also use my computer for Emergency communications stuff and other HAM radio digital communications so it is easier for me to have the larger monitor. I just wish there was a front end that worked the way it should form the get go and actually utilize 1024x768 So far I am not very pleased with any of them :-(