How about "when someone brings a gun fight to you, and all you have are your fists, will you be ready?"
That works for me. I am in favor of martial arts training. If a fight comes to you, and your fists are all you got, if you think they will save your life, then use them. If you think surrender will save your life, then use that. Each situation is different. The bottom line is: stay alive.
All I'm saying is the best martial art will never equal a gun, unless conditions are EXACTLY right, and the martial artist is VERY good and totally ruthless.