I want the courtesey wave DAMN it!!!

This has long been one of my biggest pet peeves and nearly throws me into road rage, but if I kind and courtious enough to let you out I expect a courtesy wave! If I don't get one, I regret letting you out in the 1st place and am tempted to RAM your car. I don't have to let you out of the shopping center, the bank or starbuck's, but I do because I am not usually in a hurry to get anywhere and...its a nice thing to do. If you can't wave because, you have one arm...then give me a head nod. It is the least you can do!