You're making the common presumption of a situation where violence is inevitable. Almost all of the time it can be avoided, unless you escalate it.
Discussion
I agree, violence is extremely rare. I’m a very peaceful person and would never take the first step to escalate violence. But on the rare occasion that violence may arise, I’ll be prepared. I don’t leave home without it.
Capability is already a form of escalation. If there was a potential fight, now there is a potential gun fight, and you'll be in it because you are a threat. I understand where you're coming from, but I don't agree that you'll be prepared.