Every situation is different, but some may argue that you have a moral obligation to prevent something bad from happening if you have the means and opportunity to do so.
I would agree with that. I would hope that I would respond to others being attacked. Why else carry?
The primary factor would be whether I was alone or with family. Family comes first, so I wouldn’t engage if I felt it would endanger them more.
I agree with you but it doesn’t include putting myself in danger. If I had a clear shot to his brain would I take it? Yes, definitely. I love my Crimson Trace Laser sights!
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>> “if you have the means and opportunity to do so.” <<
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I carry all the time, everywhere I go. I do not carry in a ‘quick draq’ way since I know if someone targets me in surprise they will likely get me. BUT if I have time to draw my weapon and means to terminate a bad guy/gal, I am committed to do so. At 71, I want to terminate the bad guy so it can’t continue to do unto others, immediately or in some leftists future preceded by a ‘court appearance and release’. ... And I practice as often as I can do so, with a variety of personal tools.