A responsibility requiring an uncommon measure of forbearance and respect for human life.
Most situations can be deescalated /the assailant subdued, without deadly force.
Retribution or an impulse to redeem one's honor must never enter the equation; ego and anger have no place.
Most lack the emotional maturity, and shrewd judgement to employ a firearm strictly as a last resort.
The tool you hope you'll never use, is not for defending honor; levelling the playing field; or having the last word in a petty dispute.
99% percent of which can be defused by simply walking away.
Law enforcement a credit to their shield, understand this. The precious few with the discernment and experience, to make the impossible choice.