I know more than anyone how you feel. my car is a daily driver so i have everyone eye'ing it everywhere and they want to know what's in it and stuff. and yes of course it got broken into. a couple of things you can do. As far as a kill switch, if you have an aftermarket ignition like i do with a box. you can take the purple magnetic pickup wire and connect that to a ground of some sort, and put a switch on it (this is also explained when you buy a box, VIA either MSD-6A or something) that would just have the car crank, andn crank with no spark, even if they spliced the wires. The other option is an alarm that has a kill switch in it (i believe its mainly stock on all alarms now)you would either need a motion/shock/proximity sensor with that also.
hey i got a question for you guys: How do you keep the friggin cats off the car?!?