What is something you do and when you are doing it you are in the right, yet it annoys other people?

In case your confused I will explain. I drive the speed limit. Literally always, including when I am passing someone. I've got a degree in Criminal Justice, so I know the traffic laws fairly well in my state. You are perfect legal to pass people but you STILL have to go the speed limit.

This apparently annoys the people I know to no end. My best example is that one day I was doing a favor for a woman, I personally can't stand, but she is a friend of the family. I had no clue where I was going so she was giving me directions. At one point she told me to get into the right lane. Me thinking my exit was coming up asked for the number, to which she responded, "Oh no, I just hate when people go the speed limit in the "fast" lane." Here in Wisconsin there is no fast lane. Its called the passing lane. And you still have to go to the speed limit.

It annoys me that other people get annoyed that I don't want to get a speeding ticket.

So what is something you do, that is perfect in your right to do that annoys other people, Reddit?