It's not the greatest thing, but not the worst either. Kinda have to accept it and get over it if you don't have a garage. My car got keyed on the second night I had it. Not to mention a couple scratches on the rear bumper.
-bumper bully ftw-
I try to park behind a hydrant as much as I can. That way, no one can park in front of me, and behind me I have the FUGLY B.B. protecting my butt.
One time, at around 3AM, I was just street/people watching and out of nowhere, these drunk teens stumbled down the block and furiously front kicked a passenger-side mirror clean off a car. As furious as I was, I was extremely impressed by the form of his kick, especially considering his lowered dexterity at the time of intoxication lol. And this is in a pretty decent neighborhood.