i agree some people do fear guns and obviously others do not, but you have to see that is the point - like you said "if someone has a gun he choose to/not to kill you" and by walking into a crowded place with others who either fear/not fear guns or not, they didn't necessarily know what he was going to do/not do. i mean sure you would like to think the best of people but sometimes you just never know.
but i dont know what that guy in the car coming at me is going to do either, i just trust he doesnt feel like ending his life that day and swerves into opposing traffic
i gotta hope he is smarter than to drink a case of beer and climb into the drivers seat
when i get into an airplane i have to hope the mechanic didnt get pissed at the world that day and fuck with the engines