Ever notice how people stay mad all the time, one example.
Your ready to cross the street you look both ways but a car is coming but the car sees you and stops,( that was nice) now to extend back the nice deed you run across the street while waving and saying thank you.......Really !!

First of all you didn't want to run across the street and wished the friggin car just kept going.
Person in the car would have been mad if you walked across the street and would have been mad anyway if you waved them buy.

Can't we just get along.