If people want a run-down of my main defensive use of firearms or the bluff/threat of their use...
I've probably used the threat of a firearm to cause an attacker/group of attackers to abort attacks that were in the progress/unfolding at least 3-4 times.
The two most prominent instances being when I was 15 in Chicago and when I was 19 in my home-town, neither time did I actually have a firearm on my person (I had a knife the first time, and a knife/pepper-spray the second time).
The first time you already know about...
The second time... My dad decided to leave his carry gun home that day, for whatever reason, as we went biking. My hometown is 98% white, but for some reason a car with 5 people (2 white, 2 black, I didn't notice the race of the 5th guy) pulled up alongside me, one guy shouted "these are our railroad tracks, this is our turf!" for whatever reason he had (I was near the railroad tracks) and I just shrugged and thought nothing of it and continued to bike the opposite way from which they were going. They then pulled off to the side of the road on the shoulder and 3 of them exited the vehicle. My dad was not yet aware of what was going on, but I quickly alerted him to the situation as three of them started to rush up towards us, and I spun around, locking myself in place as I tensed up and readied to either turn back around and bike away, or confront them. I decided on confrontation.
As they got to about 50 feet away I stuck my hand in my pocket on the bulge that was in my pocket, the item just being my knife and my pepper spray next to it. I locked eyes with them and made it clear something they wouldn't like was going to be coming out of my pocket. One of them shrugged and dismissively waved his hand, then the three of them turned and went back to their car and drove off. I have no idea who they were, I had never seen them before in my life, I sure as hell was not on "their turf" as their plates were not even from this county. I have no doubt if they hadn't been run off by the pistol in the pocket bluff, they'd have kept coming and gotten close enough that I'd have had little choice but to use the pepper-spray and/or my knife.
Since then, my dad has never had another of those "I don't want to carry my gun today" days.
I could make a list, going on and on... How I've been mugged before, how I've been the victim of a telephone stalker who used to call 2-5 times per week at 2 am (this went on for over a year until my dad finally answered and told him that he ought to look in the front of his phonebook and see the page that talks about how you can call the phone-company and have them lock in the last number that called you, at which time they then will give it to the police who will be paying a visit to the owner of that number), making references to this or that, or how somebody used to message me and tell me they knew what I was wearing, etc.
I've had a lot of unusual experiences, I figure more than what my fair share ought to have been.
As for carrying... Have I ever actually drawn or had to draw my gun on anybody? No, not yet, and I'd prefer not to have to. Although I came close one day... My dad gently moved a cart out of the way in a super-market (it was blocking 90% of the isle) and a guy about his age, maybe a little older, sees that my dad just moved this lady's cart. The guy comes up and says "you're in a hell of a damn big hurry, aren't you?" and my dad just calmly says, "mind your own business" without even looking over his shoulder to make eye contact with the guy. The guy then begins to tense up and he makes a straight line for my dad, coming right up behind him. I immediately locked up in place, unbuttoned my coat so that my hand had an easy and open path to the 9mm I carry in a shoulder rig, and I made direct eyecontact with the guy as he was now coming up about 18 inches behind my dad. He did nothing, he walked right by my dad and I turned to pivoted to keep contact with him, keeping my hand in my coat, until he was about 20 feet away and going down a different isle. I told my dad that it was a bad move to talk to that guy and not watch him at the same time. My dad said "that guy was old, he was no danger, he was old" and I said "he didn't look that old, besides, he could still have had a knife or something..."
Literally, that guy cussed my dad out over nothing... All my dad had done was to gently move a cart that was blocking the isle, out of the way, without comment and without attitude, he simply moved it and tried to proceed on his way.
A lot of people have this attitude that they are entitled to bully those around them. I don't buy into that and I won't play that game their way. If they want to force me to play that game, we'll be playing it my way, and they won't like my way.
As somebody previously alluded to, in a cynical fashion. I'm not some super-hero type, if I was a comic book character I'd be an anti-hero. I believe in giving people what they give you. If somebody is giving me grief, I am all for giving them so much grief they won't ever want to even case a house again, let alone rob it.
To the people who know me, I'm neither disturbed nor crazy, just unconventional. I help people with their baggage, I help old ladies load their groceries into their car (as middle aged people and people in my peer age group stand by and do nothing), and I do a lot of other stuff along similar lines. So most people who know me, see me as helpful yet "eccentric" (for my numerous instances of saying rapists should be executed, executions should take the form of public hanging, victims/families of victims should get to decide the punishment -if they decide to punish rather than forgive- and other things of that nature).
I won't deny for a second that I am eccentric and hard to handle, but I'm the sort of person who can either be your best friend, an advocate on your behalf, somebody who would gladly strap on his armor, pick up his rifle, and wade through knee-deep water to get you out of trouble if you were in a Katrina style situation (for a few relatives, my wife, a few best friends, I would do this), or I can be somebody who would pray for your demise or your just rewards (for a few people I have prayed as much). I'm pretty much a reflection of the person who is interacting with me. What they give is what they get. If you come up and throw a punch at me, over nothing, you're going to get one back.