I agree with your post. I think it is cowardly to not be prepared to shoot down an offender. I live in Honduras, a country that has suffered a lot of violence in past generations. I never thought it would happen to me (I didn't look for violence in any form), UNTIL it happened to me.
I had a comptroller position at a large company and I discovered employees stealing ( a group of them). I reported and no action was taken. A few days later at 6 AM in the morning as I was leaving to work, a thug shoot from the road to my car 9 rounds (9mm), 4 impacted the right side of my car. Not one round touched me (closest one came inches from my spine). I am SO thankful my wife was not with me in my car. This all happened in the driveway to my apartment (at that time). My wife heard the shots go off. So my response was: NEVER AGAIN.
I now carry an FNS .40 S&W (multiple magazines also) and a .22 pistol at home for the wifey.

Interesting fact a detective told me... 2/3 murders arise from interpersonal disagreements. In my case, financially interested individuals paid around $ 200 to put me out. Ridiculous.
You do not need to wait for a psycho to show up, or be in the place of a shooting. ALL you might need to do is stand up for the right thing. I now stay prepared because i WILL stand for the was is RIGHT.
Note: after that I have started my own business. If I'm taking a shot, it will be for my own money.