Alternatives:
[*] Laws and controls that mean the rapist is unlikely to be carrying a gun
[*] A sturdy lock on the door
[*] Self defense classes
[*] A bat or the like within easy reach
[*] A taser
[*] Etc.
I am very well aware that number 1 above is not going to happen in the US so for most of you a gun for defense is the logical choice.
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