Si vis pacem, para bellum
Now......if you can just get all the bad guys to stand still, at exactly the right distance, you may be able to get most of those pellets on target......although, a bunch will land in arms and legs anyway.
I have killed a lot of stuff with shotguns.
But for everything I have killed with a shotgun, there have been many shots I didn't take because the distance was "too far".
I get that shotguns can be fast and versatile.....but I also get that if, during a gunfight, a bad guy appears with a rifle (or perhaps even a handgun) further away than a modest 50 yards, he will most likely kill you.
There are plenty of carbines (and brace stocked "handguns") that don't give anything away to the shotgun on speed and lethality, that will also range out to >200 yards if you have to.
Perhaps it is the difference between OK and better.
Better is the right choice for targets that shoot back.
Let me guess, you shoot buck in a cylinder bore barrel.