[jumper]

I think the basic motivation for carrying a concealed weapon in situations like these is what if the guy never plans to stop killing? What if he just carries on hunting people for so long as his ammo lasts? That gives you a possibility of making a difference by putting him down early.

Likewise, why bother wearing body armor, they'll just shoot you in the face! Except... sometimes whether by their aim sucking or not having time to aim properly, and etc., it does matter. Chaotic situations like these have many possible challenges to present you, some of which a concealed weapon can help you with.

I think a lot of people have hate for guns and hence irrationally choose to ignore all the utility of them, in this case by suggesting a situation where it is ridiculous to stop bullets with more bullets, essentially a strawman argument, ignoring all the situations where you can use bullets to prevent someone from firing more.