The first step to murder is buying a gun. Step 2 is learning how to use it, step 3 is not being afraid to be put in danger coz ur cocky now that the gun has made u no longer fearful. It happens too many times, without a gun, u would never go to a certain club, or a certain route and u avoid danger. U get a gun and now u go to that club and end up with someone dead. In any case. That is the age old argument of gun control people so won't get into it.
Back to the topic, no I don't know anyone who packs and if a lady does, I would cross her off my list. It's the same reason I avoid managed girls coz I avoid dangerous situations or any situations that night lead to my hobby being more dangerous than it should be.
Here is a bizarre case that I just found after some googling:
Man in SA is acquitted of murder after shooting a Craigslist prostitute in the neck because she refused to have sex with him, and refused to return his $150. The woman was 23. He was not charged with any other crime.