I had my car broke into about 4 times now. (not so good neighborhood I live in) the first time I had all of my CD's stollen and radio. The second time they couldnt get anything because I learned to leave everything out of my car and they decided to just break things including ripping my license plate off and leaving it all bent in the street. The last two times I just come out to a car that was clearly rifled through but no other damage. After the first two times I got an alarm and that vehical never was broke into after that. The last two times they broke into my new cars without alarms. I know of alot of people that have had their windows broken for nothing more than a radio and change in the counsil in my one friends car. It is not worth locking your door, better to just leave everything out of the car or in the trunk.The red light that an alarm system comes with is usually enought to detur the average kid thats just looking through cars, they will just move on to the neighbors car that doesnt have an alarm. It sucks when things get taken but it is just one of them expensive life lessons,