I may have shared this before, but not every ding is an accident.
In 2001, I hit a deer with my old Explorer. It impacted in the right front and swung it around into the side, denting the front quarter panel and front passenger door. Before it was repaired, whenever the front door would open, it'd make a clunk sound.
As I got into my driver's door and my girlfriend into the passenger side, she pulled the door closed, and it clunked. The owner of the vehicle next to me, some stranger with his significant other, thought the clunk was my girlfriend's door hitting his piece of . . . S-10. So, we we were getting ready to pull out, he opened his door forcefully into my the passenger side door. I immediately slammed on my brakes. I wanted to get out of the vehicle and lay him out. Had my girlfriend not been with me, there would have been some type of confrontation. Unfortunately, she didn't convince me otherwise, but I also did not want to make a scene in her presence. The ding was repaired when the entire front and front right was repaired, but it still makes me angry to this day.
Long story short - for as much accidental damage that occurs, there is far more carelessness and maliciousness.
My advice? Find the nicest car in any lot and park next to it. They won't hit you, and you won't hit them.