Hundreds of times. Peacefully. Along with hundreds of millions of other Americans who have collectively been to church 100's of BILLIONS of times, even in the most violent prone areas of the country with nary a problem among them. I mean really. People have been killed by meteorites crashing through their house. Do you build your house for that eventuality? You'll also note that the event you referenced was resolved without need of an arsenal. The line for events we prepare for has to be drawn somewhere.
The odds of my needing the first bullet in my CCW are probably .001%, the odds of needing the last one in the magazine are probably .000001%. Now what are the odds of not just needing but emptying a spare mag? Unless you're in a literal war zone (I know a few of us actually are) it's a bit over the top to be considering the need for that much firepower.