Not saying that I condone double parking or would ever do it myself but I also relate.
I never double park but I've certainly be tempted to at times. The finish of my paint (isn't perfect by any means but she still looks 1000x better than she did before we painted it) is a bit more vulnerable and whenever I park I always park notoriously far away to find a spot well away from the other cars if possible. People are careless and self obsorbed, plain and simple. I trust no stranger in any given parkinglot ha ha.
When at work I'm always extremely deliberate in finding a spot next to one of the plant beds so I have a curb to park as close to as I can, leaving as much room between my car and the spot next to it as possible =)