Lady, EVOLVED 
“get a gun to protect yourself” a gun does not protect yourself from shit. it is small and worthless at blocking blows. you're better off stepping outside and picking up a fallen tree branch
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the only things guns are good for is causing large amounts of damage at a distance longer than an arm’s length, and suicide
most people do not actually have a good reason for doing the first thing and we would like to prevent the second
for everything else, learn an actual martial art