There is such a thing as good manners in a parking lot. Too often people come back to their cars to find a big ding or gash (for example from those big trolleys at certain DIY home improvement stores). And this always happens when your car is brand spanking new.
I know it's extra effort as part of a long, weary day to push that cart back to a holding area. Maybe you'll get some good karma and your car will leave the lot unscathed. At the very least, it's extra exercise.
