The ability to defend one's self is a basic function. Being dangerous can be useful. Encryption is a tool for guarding privacy, and weapons are tools for guarding against physical threats.

Not having widespread access to firearms in a society doesn't imply that its citizens are defenceless. I.e. some societies skew towards longer-term strategies like reducing desperation or increasing self-control.

There is a cost to having a society saturated with firearms. The vivid, individualistic, but rarely used benefit of personal defence has to be weighed against the boring, common case of excessive violence and escalation due to access to and glamorization of firearms.