A .45 calibre bullet fired into the skull stops rape in an instant. Reaching for a gun, pointing it at a would-be rapist, and shooting the evil person is much quicker and more expedient and more effective than reaching for your phone and calling the cops.
Don't tell me that nobody is coming for your guns. Yes, a lot of people are coming for our guns. There are people who will tell you to "Call a cop." rather than defend yourself. Our neighbors to the North will arrest you for owning a taser. Australia will allow you to own a gun to shoot feral cats but will jail you if you shoot a human aggressor.
Having one friend who has been raped is too many. I have far more than one. I have zero tolerance for radical anti-gun rhetoric. This is a hill upon which I'm willing to die.