once had a '85 pontiac grand prix stolen from my apartment complex in 1997. It was the ONLY vehicle that did not have any kind of alarm, and the complex was gated, too. It was stolen after 1100 PM and was in the police impound lot by 0330 AM. In that 4 hours or so, it was used to ram another car off the road (rival gang members), deliver a wounded gang putz to the local hospital, and then taken out into the boonies and set on fire.

I got to the police lot at about 0830 AM, and that car was burnt to a crisp.
Cop told me that thugs will throw a bag or two of potato chips onto the seats and light them on fire. The grease from that crap burns hot and ain't nothing left but the frame.
Since then, I at least have a basic alarm on my wheels. So, even if they are just kids that steel your car, you never know, ya' know.
Oh, one more thing. Some insurance companies are not paying off the full value of the loan, they use a "average" of so many of the same vehicle that are totaled and paid off, that's why GAP insurance from dealers is pretty good to have.
Maybe someone could elaborate on that ???