Hidden Rules & Common Courtesy

I was taking my son to daycare this morning and some questions occurred to me. It was all a matter of courtesy and hidden social rules. The school has a large parking lot. Most parents are trying to get a child or two out of the back seat. Why do people feel they must park in the space right next to you when there are 20+ spaces available elsewhere? There you are pulling your child out of the car, door wide open so you don't bump his head and along comes Mr./Mrs. Impatient who noses his/her car into the space next to you as if to say..."I'm in a hurry." Listen mister/lady...I am in a hurry too, but I am going to slow down just to impede your progress. When you are entering a building and you know that someone is walking up behind you with child in tow, how close to you do they have to be in order for you to have to wait and hold the door for them? Inversely, when a person is holding a door for you even when you are clearly too far away for them to need to do it f...