I never said it was a good reason man, i'm just saying why its done. And for the record, its not an individual whim, its the whim of a mass of people who are trying to protect themselves and the people around them. Try cycling by yourself on a major street and see how safe you feel. Then try it in a group. This town is not safe for a cyclist to ride on the road. Its that simple. So we do what we need to do to remain safe. I've been in your shoes as a driver and i've been in the shoes of the cyclist. If you have a problem with what happens in a critical mass, ride in one. See how its done and why and then just ride alone. I'm not saying you will see it the way we do. But at least you will see it from where we do.