Are car alarms still being bought? I don't have one now but I had one installed on a vehicle several years ago it seemed to be the best options to deter theft at the time. I also remember how often times one could be heard going off not because of theft but any vibration that occurred which was annoying. My Jeep has keyless entry which I guess is suppose to deter theft as well but I am considering another car alarm being installed. So what is the outlook these days for car alarms? Are they still worth having installed?