Naturally, when someone is shooting at you, or otherwise trying to kill you, you need to be as fast as you can. However, when the fight or the threat no longer exist it is just an excellent idea to be very slow about holstering that defensive handgun.
You recently purchased a handgun. The local gun shop owner helped you find one that was affordable and fit your needs. He also referred you to a local firearms instructor who could help you learn how to use it. After your first lesson, you could hit the target with a satisfactory degree of consistency. One thing that caused you to wonder a bit, however, was the instructor’s extreme attention to the positions of your feet, legs and arms, in an effort to put you in into what he called a “fighting stance.” If you were just an inch or so out of position, he would come over and adjust your limbs until he was satisfied.