I don't mind at all, waiting for my turn on the road. What I do mind is not receiving it in kind - in London a lot of people refuse to let you in, they see getting from A to B as some sort of competition. Meanwhile, I'll let a car in in front of me if I have the opportunity, only to be denied it when I need to slip in from a minor road during rush hour. Humans are a selfish species, thank evolution and resource contention.