Letting some fool cause you to ride in a manner other than how you want to ride is giving up some of the freedom that cycle riding is all about. I believe riding is about the freedom to be yourself and to have control so I try not to let some cager idiot dictate my mood when I am on the bike. I do get upset and PO when a big expensive SUV decides to cut me off and I have expressed my anger a few times at traffic lights but it is useless as those people really don't care about anyone or anything other than how they think they rate in their own private world. If you don't give them control they have no control over you. Ride safe.