Thus I give you a few incidents to ponder, respectfully WINDMIA, ones that shows you made an excellent point in your comment, as friendly fire has killed, but also there are many cases where people have saved themselves from a terrible fate at the hands of those who have no respect for life, as murderers, rapists, high on crack, whatever came to destroy or threaten them with their life. 
Thus it is not guns to blame in my opinion, but people, the ones who will not be stopped from assaulting, raping, robbing, or just killing others, by whatever violent means they employ. For a woman, or those easily preyed upon, being so familiar with firearms as a tool of defense, it can be the great equalizer to a violent, evil, felon, and there are many free and walking in society as we well know, from carrying out their will on them. When they are so caught facing such, the cops will be along afterwards, but for that moment in time it is happening, in God one may trust, but on Sam Colt one may rely.