This forum is just chock full of people better than others!
Read between the lines. Lighten up just a tad. Don't be so quick to point out how superior you are.
I am a Hunter's Safety instructor. I teach gun safety. I'm not about to indiscriminately throw lead around... My main point is and has always been the same: I'm trying to instill the notion that your single shot muzzle loading flintlock pistol just may not be the bad azz weapon you think it is. You may just need more than 5 rounds. If you have 5 and need six, you can be just as dead with that super-cool retro throwback wheel gun.
So you are a more careful shot with your single shot 20 gauge. Don't you think that is a little different than this self-defense scenario? Maybe someone takes your daughter and is driving away, and there you are trying to stop the getaway car... Do you want to try to shoot the tires out with your single shot flintlock or your 5 shot wheel gun or do you want a M-16 with a 30 round mag and two more mags on your hip?
Or maybe you'd take care and not shoot at the getaway car at all for fear you may hit someone with a stray round while your daughter is taken away to some desolate field and slaughtered.
Self defense is self defense. Take care of yourself. You're not going to keep from shooting the bad guy who's on top of your wife jamming a knife repeatedly into her chest because you're in a busy mall. You aim, you shoot. This isn't deer hunting and you need to be sure your background is clear or you can't have a venison sausage for Christmas. This is saving your loved ones from losing their own lives. And your single shot is woefully inadequate for that.