The perpetrators of criminal violence don't fire warning shots. They are busy doing their best to murder you while you are firing your warning shot.
I'll put one in their leg to get their attention if I'm fortunate enough to clearly get the drop on an armed home invader threatening my life or the life of some innocent person and offer them the opportunity to surrender but that's about it.
If they move to fire on me the second shot is straight to their dome.
Understand; however, that I live a moral life and carefully qualify who I associate with and where I go. Additionally, I show everyone the proper respect and courtesy to people in real life and make an effort to be amicable even when I don't feel like it.
I never peacock or mad dog other people, two immature egotistical juvenile behaviors that can lead to serious problems and if I do find myself in an environment or situation with another not to my liking I simply leave.
As a result of making the right choices with how I live, act, speak, and behave in real life; the odds of an armed criminal and myself crossing paths in a negative way is minimized imho.
Home invasion and robbery are traditionally the two greatest risks for us moral, socialized, law abiding citizens in my view. Lately; however, I'd have to add random violence with all the knockout game garbage going on in public against strangers arising from fatherless males raised by liberals running wild. The liberal politicians that run this country and the liberal media no longer talk about, work toward, or care about building strong, moral, healthy families and it really shows in society with all these young dangerous males running amok.
I'm prepared for the first. Sophisticated home alarm with touch sensors straight to the police department, neighborhood watch, a professionally prepared armed homeowner defense plan strategy by one of the local security companies, and of course a great lawyer.
The second not so much as I don't have a CCW permit and California has made open carry illegal leaving us law abiding citizens disadvantaged against illegally armed criminals outside of our homes. Once the requirement for cause is finally absolved by the Supreme Court, upholding the federal judge's recent ruling, I'll apply for one.
We can carry a stun capability in California but there are requirements and restrictions to doing so. One must be over 18 years of age, not on parole, not under the influence, and the stun taser itself must be stamped with the manufacturers name and a serial #. In California, one cannot carry a stun taser around government property, schools, airports, etc... And if one ever uses a stun taser on another person: expect a civil lawsuit and a criminal investigation by default. Of course, stun guns are useless against an armed criminal.
Criminals follow none of these laws. They just illegally arm themselves and do whatever it is they are going to do... to us law abiding citizens, of course, so we're definitely at a disadvantage should we unhappily find ourselves in a situation with a criminal or criminals outside of our homes. There's not much more we can do about that at the present. Fortunately, most of us law abiding citizens aren't paranoid... lol. The reason for that is because the majority of society is law abiding citizens and that brings us comfort

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I think guns should only be used as a last resort. If you have to use the gun, at least give a warning shot into the air first. That may be enough to deter the person and /or scare them off. If you are forced to shoot them, at least shoot them in a part of the body that wont result in death. You always hear that "guns dont kill people, people kill people." That is absolutely true. It is the person's conscious thought to decide to kill or not--the gun is simply the vessel used to carry out that thought.