Home security/defense

[DaFace]

Originally Posted by El Jefe

I completely disagree, security systems will prevent break ins, it has been shown that just home security signs can be efficient. Most robbers would leave a house when the siren of the alarm goes off (if close to other houses).

The issue to me is just that you're not starting from a high probability that you'll be broken into in the first place. You're definitely correct that a security system (or even the sign as you mentioned) is a deterrent. But (purely making up numbers here) if 99% of people will never be broken into in their lives and the security system cuts your chances of being broken into in half, you just increased your chances of being broken into by 0.5%. The value of that 0.5% is the question.