Oh, don't I know it! I understand the OPs position very well. I used to be quite the rager, but I was a lot more stressed then. Even so, I drew the line before I got into an accident.
I've less energy to spend being angry nowadays, so a lot of it blows over. I'm only petulant if the other person did something that was downright dangerous. All I care about is dodging people and getting home in one piece...