How careful are you opening your car door?

Yesterday I arrived back at my parked car just in time to see a woman get out of her car bump my passenger-side door. Really, it wasn’t much of a bump, but it was loud enough to hear it eight feet away. Although I felt irritated, I simply said in a quiet, non-threatening voice, “Kinda bumped my car, didn’t you?” Not looking at me she replied grumpily, “I didn’t hit it hard.” Then she walked away. No apology, nothing.

I always open my car door gently, not just because it’s a simple civility, but because nowadays one can get shot for less. So how careful are you with your car door, and how would you have reacted to the woman who bumped my door?