I'm pretty guilty for parking far away from people too!
Doesn't always help though...
The parking at my doctors is an absolute nightmare, I parked up assuming I was safe, however when I was returning to my car I actually watched a woman bump into the back of my car (gently but there really is no need to be bumping off cars!).
She then rolled back, drove forward again and parked with her bumper touching the rear of my car.
I approached her and was swiftly told where to go and that it's "just a car".
There was no damage but that was within the first month of ownership, I was absolutely livid