You may be level headed and well adjusted by surely you've noticed the large number of people who are CCW proponents who are not? More importantly is this; when a gun is part of the equation there is now a non-zero chance someone is going to get shot.

The vast majority of the time the only gun in the vicinity is going to be that of the CCW. MOST people go through their entire lives without ever encountering a 'bad guy with a gun'. Ever.

People who CCW think they are bringing a gun to a gun fight, when maybe they are bringing a gun to a fist fight, or a stern conversation.