I asked this once in the past, but...do car alarms actually stop any actual crime ever? My entire life, every time I've ever heard a car alarm go off, literally everyone around just rolls their eyes and ignores it. If I actually looked up at a car alarm and the person outside the car just said "I'm so sorry! You know how it is", I would probably just nod and move on without really taking the time to figure out if it was really their car (because even if they were breaking in I don't have any desire to risk an altercation with someone doing that, and even if I were inclined to call law enforcement, I'm pretty sure they wouldn't come do anything because some random car's alarm is going off).

I want to be open minded that I'm missing something, but I can't help but feel like car alarms are just security theater with a side of nose pollution.