Yeah...alarms don't get much priority, usually.
There's also the factor of coverage. At one time in my county during the night shift there were five deputies on the road. Five. With a patrol area that was 40 miles at its widest point. I believe they've bumped that up a bit since then, but it's still a pretty small crew responsible for a lot of real estate. In some surrounding rural areas they have a really small crew and that coupled with poor supervision and leadership means that of the few who are on the road a couple were probably parked at their girlfriend's house doing the horizontal monster mash instead of being on patrol. Toss in the huge number of false alarms and response time prognosis is pretty grim. If it's real, they'll show up to take the report or to find your dead body. That's about it.
I find that the heavy coating of baby oil takes care of the wow factor pretty well. At least as far as I can tell from the reaction I've gotten from Kirby salesmen and guys trying to sell me meat from the back of their van.
Seriously, though, at the moment within my reach there is a Remington 870 with an extended magazine, an H&K P30, and a Glock 17 equipped with a CT Laser, a Surefire X200B, and fed Federal HST from a 31 round magazine. Unless the person(s) busting down my door used to hang with Sean, I'm feeling pretty good about my chances.