I think when you commute on a bike you get immune to the risks and incidents from traffic. I am the same as you and i never get agro as i just don't seem to care. The fact is if someone cuts me off in traffic i know i'll be 100 cars ahead of them within the next 5 minutes anyway [moto]
Yep. there isnt any point in raising your own blood pressure and giving yourself ulcers and ruining your disposition and most importantlym your objectivity while on the bike
The "red mist" doesnt help with good decision making! And in a Car vs Bike situation you just wont win if the cretin in the tintop decides to push you around!
And dont expect any support from the authorities! The question that is usually asked is "What did you do to the driver first to warrant thier reaction?"
You're riding cos you like it, and therefore for fun! [moto]
Its up to you whether you are going to let some retard stuff it up!