Your analogy does not work.I will grant you this- like an auto or moto accident, there is a small probability you will be the victim of crime. But helmets and seat belts will improve your outcome almost 100% of the time! Cops intervene in approximately 0% of the violent encounters that occur on a daily basis, and recover effective 0% of the property that is ever stolen. They show up after the fact, take notes, and occasionally make an arrest when they are not too busy waging a war on traffic violations and adults who use drugs.