I always see people posting about how "easy" doing something during a gunfight should be.
Shooting at a stationary piece of paper is easy. How easy is it while you're moving? How about when your target is moving? How about when both you and your target is moving? When you're under pressure is it still easy? What about when that pressure is life or death?
I remember a news article awhile back about a gun games champ missing every single one of his shots at the bad guys (luckily he still made it out of that situation alive).
I'm all for giving yourself every advantage you can while expecting the worst.