Let's all but these arguments in perspective. As I posted earlier, training, and intensive training breeds confidence, and sorry to admit but multiple assailants are not even a concern, period. It your familiarity, and ability with a firearm are minimum, than any one would suggest that until such time as you gain confidence with the weapon, and your mind, you might think of another solutution. Simply owning a gun, might make you feel like Rambo, but it also means that usually the first one injured will be you!
We've debated the question of respondsibilty, and morals enough to not need any more say, but what is not debated is your mental state at time of stress. You have no idea until that time arrives what will happen, and how you will react. The better, and more highly trained and practiced you are, the less you think about, and worry about, you react instinctively, and quickly. There is plenty of time to relive the moment later. the less youhave to think, the quicker your reaction time, and the quicker the situation is defused, or eliminated. Sound cruel? Perhaps, but home defense, and the proper and precise way to defending ones-self and his family aren't learned on forums, on tv, or in the movies. They are drilled into your subconsciense, and mind until they are second nature. If you have to think, and not react, you've lost you edge.
I've said enough on this subject, and it's not one I like discussing. That lowers my edge. you always have the best defense when everything is over before you have to think about. Prepare and practice.....An learn from ones who experience this on a daily basis. I've said too much, and beg that what I have said makes sense, and if it disturbs you, so be it. This is not a subject to be handled lightly! Thank you!