Why do you carry a firearm? It's for your protection in a deadly force situation. Right? So the only time you're going to protect yourself is when you're in a deadly force situation? It doesn't matter if your 17 or 77 you're more likely to have to protect yourself from a non-deadly force threat than a deadly force encounter. And if anyone thinks they can talk their way out of every physical confrontation then they're just setting themselves up for ending up on the short end.
One of my defensive tactics instructors had a saying. "When the only tool in your tool box is a hammer then every problem becomes a nail."

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183rd FBINA