You're a good person - you left a note. Many wouldn't. I remember once working in a car park (on a stand for the wildlife trust) and having to force a women, who had pranged the car next to her and was trying to slip out unnoticed, into leaving her details. (I'd already written down her licence plate number in case she refused)

The only time I ever hit a parked car, I left a note. I was glad I did as it turned out to belong to someone I knew.