Because life's too short to be all idiotic about a little ding in a car. It's a mode of transport, not a fetish.
Lots of people with £500 sh*tters on here.
Some of them are even proud of them and would get upset if their car got dinged.
I'm not, I'm all about throwing my door open to put dents in other people's new cars. It makes them cheaper when I need to buy them.