This man obviously was carrying a gun for the wrong reason, or thought he would never be in a position to need to actually use it. It's better for him if he doesn't carry. It doesn't need to make sense to anyone else. But there are many out there who carry because they feel either safer, or it gives them an air of superiority, those reasons become in question when an actual incident happens to them or someone close to them.
If you can't kill, then you should not carry, it may sound violent, but this is a violent society we live in, and not everyone is prepared to risk life and limb for a reason that they may never thought would be in question to them. You see it in the military and the Police force and they have had training meant to address this, but some just can't kill another person, and are just too freaked out , it's fight or fright. The bit about carrying a hi cap mag, has nothing to do with it. That's just an excuse, he decided that this was "real", and wanted no part of it, just as many folks who carry because their fiends do, or they feel it's cool to have that shiney piece of metal to show off. Or just can't make on the spot decisions and don't realize they may have to. This encompasses a lot of people who we all know that can't make decisions.
How many folks have a friend or neighboor who just can't decide on what color to paint his home for the past 2 years, or if he wants a new car or not. That type of thing is ok in normal situations, but if it carries through into second guessing everything you do, it is a bad mixture for a man or woman who needs to make that 1 second life or death decision. Diminished capacity plays a part as people age, which is why one must practice and have a plan to implement if the worse occurs, or just give it up.
Like who to shoot first, and how many rounds to fire , if any. Can you hit the first 1 or 2 guys before they even see that you are there, "can you fire without warning, is a gun already out, do you know they are bad guys and not undercover cops", all this information has to be processed in a second, that's all you have if they are criminals.
Someone once asked me, "a tough guy", what would you do if I came up to you with a gun, and demanded your payroll, I said I would shoot you dead in less than a second. So do you want to take that chance. Plus I am not alone, my partner would shoot you before I did. He looked at me and said, you aren't kidding are you, I said no I am not.
Now unforyunately now he knew he had to shoot me first, but I knew he was not a murderer, maybe a stickup guy, but fact is you have a second to shoot someone before they realize what just happened, if the guy knew you were armed, he would shoot you first, so if your still standing there with your gun on your hip, do you really want him to decide if you live or die, or can you move and shoot fast enough that if you are hit it will be a superficial wound, at best, "hopefully", decisions must be made, and some don't want or need that kind of decision in their life. They are fine with "do you want fries with that". Stay safe