I ain't scared. I have my superman pajamas on
Doesn't count unless they have the footies.
In seriousness, where you live at, and me to an extent, a shotgun is a highly useful tool for that kind of job as you can move inside or outside. But for suburbia America, it tends to be the wrong tool for the application of HD. I'm not saying it's not effective, but when you see that the majority of folks that have a shotgun for that application don't take the time to practice with same, it becomes a liability.
Most folks that get that advice get told the myths of "you don't even have to aim it!" Which is highly illogical since any weapon needs to be aimed and a shotgun is actually more so in that regard. Since loads other than sabots or slugs will spread, it's imperative that the weapon is aimed. Because that can and will cause significant overpenetration and go right through sheetrock walls.
Or you see the "you can use birdshot up close!" Which is a lie since nobody in the ballistics world that does testing would ever recommend birdshot since it lacks sufficient penetration to knock down a target. They will get bloody, sure, but the wounds are typically superficial at best and the target can still continue the acts that led you to shoot in the first place.
And then there are the gun store commandos that will say "all ya gotta do is rack it! They'll piss themselves trying to leave!" And if they don't? If someone has nothing to lose? Or is tweaking?
Next is the fact that with lack of practice clearing a home with a shotgun is not an easy task. Nor is firing one single handed while your other hand is working the phone dialing 911. With a pistol, you can do both. And then you have family members that might need to use it. A pistol is typically a point and click interface and the violent recoil associated with most shotguns can/will cause a person to jump and even drop the weapon. And hesitate on follow up shots unless they've been training with said shotgun (which most people don't)
Believe it or not, your new play toy is better suited for HD applications than a shotgun is. Higher capacity, significantly lower recoil for follow up shots, short enough not to cause serious issues while moving room to room and some ammo is far better to those applications since it's been proven to break up in sheetrock and other building materials in case of misses. But still penetrates deep enough in the target to cause incapacitation.
I'm not a huge proponent of a shotgun for home defense. Pistol, carbine/rifle and shotgun as a last option.