hell, if you getting an alarm pager, might as well make sure you have a gun too...because people don't think about that...what if your alarm does go off and you see a couple of dudes trying to jack your car, and of course they have to be armed with something...and for you to just run downthere with nothing in your hands expecting them to just run away is kind of ridiculous...even calling the cops in some areas is pointless because response time is forever, but if ya got yourself a gun...you can run out there and be prepared for whatever!
because you're right, NOBODY pays any attention to a car alarm going off...it's a daily occurence that tends to be more annoying than making people pay attention to what's going on.
hell, i set off plenty of alarms in garages and on the street just with my exhaust, and nobody pays any attention to the alarm going off.