Lets say you are putting fuel into your car at the pump. There is no one using the pump in front of you, but other cars cannot access it so they just have to wait behind your car.
You finish putting your fuel into the car and you want to buy a couple of things other than fuel while you go in to pay, including a coffee. There are two vehicles behind you waiting to use the pumps.
Do you move your car forward to a nearby parking spot to free up the pumps for the other cars? Or do you go inside the service station and do what you need to do and not worry about the other cars waiting?
Do you think being in the shop for 5 minutes is inconsiderate to the waiting cars?