Property crimes, especially break-ins, are reported to the police for insurance reasons if nothing else.
That depends on the property owner’s calculation of whether, after the deductible, filing a police report and an insurance claim are enough when measured against the hassle of dealing with the cops and the risks of an insurance rate increase or cancellation. Homicides are regarded as virtually the only crime for which the reported rate closely tracks the actual rate.
Probably pretty rarely. What’s a normal deductible these days? Probably somewhere approaching grand theft levels. People in Atlanta leave their car doors unlocked because they’d rather have some petty item they forgot about stolen rather than a smashed window and dealing with the insurance co & police. I had a Leatherman stolen out of my car in my driveway years ago. Not cheap, but I didn’t report it. Same night it happened to neighbors, but we all talked about it.