You know what I hate? Waiting for people. I hardly ever bring a book with me when I go out to meet people and when folks are late I end up staring at the walls. It's so frustrating; I get all twisted up if I think I'll be late and often end up places unfashionably early. I compensate for my terrible sense of direction by leaving 15-20 minutes early if I am making any journey I don't repeat several times per month.
Why are so many people habitually late? This thread has some interesting answers (and some righteous but off-topic criticisms of latecomers).