It's a nationwide problem. Maybe you believe aggressive driving poses only a minimum driving risk. Not true . For one thing, aggression can result in an extreme response from others. It causes you to go to extremes in your own driving.
Courtesy is like swing dancing.
It's important not to step on people's toes. It's a short trip from anger to rage. Aggressive drivers do the kinds of things that other drivers respond to with anger. At the extreme, anger turns to Road Rage and knows no limits. In the grip of road rage, drivers blame their actions on others.