I remember where I lived as a kid in a bad housing estate, one morning my parents came out to their car and it had foot prints going over the car bonnet, roof and boot. Somebody had walked completely over the top of their car, but also everyone else's cars which were parked in a line down the street too. Now I've my own house luckily it's in a nice area and stuff like that doesn't happen here, but I still park one car in the garage and one in front of it on the driveway.
My Supra never gets parked anywhere, it's taken out the garage and driven randomly about. Then goes back in the garage after being used, it's never used to commute or been parked up anywhere. One reason for that is because I would be silly paranoid about her the whole time. Thankfully my girlfriend understands my paranoia and doesn't say it's stupid. I found it hard leaving my Supra parked in carparks on the Dragonball last year, but I wasn't too bad as it was parked between 2 Supras everytime