Rant: What is it that would allow one human being to dent or scrap another individuals car and not leave insurance, contact information on it. I am sick to death of the amount of money my fellow clumsy and at times malicious humans are costing me:

Scrap of my Toyota last year will cost $500 to fix. Misc. other scrapes and dings including one on the upper half of the door could run another $500 to $700. I just found a big scrape on the side of my truck, which has sat for months and other small one on the other side. Last year, the rear window on the Toyota was crushed by a peice of concrete thrown through the rear window (suspect is a boyfriend of a teenager down the street who drives a similair car and he's often mad at her.) That was $600+

What's the deal?!!