I have to say being a good samaritan is a very good thing, if the damage is that minor I would have let it go because one time in the winter it was icey I went to pull out and almost got side swipped so I backed up and didnt realize that this guy had backed up to my bumper and hit him, I got out the guy looked at his bumper (I put a mark in it) and it mashed my bumper back up in and he just said not to worry about it which made me feel really good lol. Since that happened I decided that I would let someone off because if that guy would have called the cops and had an accident report filed, my insurance would have went up, I would have been grounded, and I would have probably lost my license