I tend to agree - but long guns can be a challenge to move arount a house, attach a light to (and you need 2 hands to hold it..so you're in the dark), hold very little ammo (relatively speaking) and you must choose the right ammo - birdshot won't hurt a well dressed human and slugs are more damaging (penetration) and just as hard to aim as any other gun.
So you need buckshot..at indoor ranges (what, 10 feet? if that?) you get no spread so the aiming aspect is a fallacy. At ten feet you get a 3" pattern with #4 buck (
View: https://www.youtube.com/watch?v=xhP36HrufKk
)
So you gotta be withing what, 6 inches to hit the bad guy - if your aiming for center of mass and can get withing 6" at 10 feet you're gonna hit the guy with your glock too.
Some like shotguns because they won't kill the guy next door - no over penetrataion, and that is generally true. But if lack of penetration won't stop the bad guy either.
Interesting test...
The Box O' Truth #3 - The Shotgun Meets the Box O' Truth - The Box O' Truth
A 22lr penetrated as much as the shotgun round.
The Box O' Truth #1 - The Original Box O' Truth - The Box O' Truth
Shotguns are the best home defense tools .. the problem with centerfire rounds, is they will go through many layers of sheetrock and therefore you really need to aim in a safe direction ... tough to do under stress.
The best self defense gun is the one you are familiar with - accurate, can shoot half asleep (manipulate, load, etc) or under stress. It's got to be muscle memory - because you need to have your mind on the target - is it a family member? your dog? a for-real bad guy?
If your distracted with making the weapon run you may shoot someone by accident, increase your chance of missing and if it's truly a bad guy you may get shot/attacked before you even get a shot off.
So therefore you HD gun should be the same as your carry or car gun (i know people that have guns all over the damned place..paranoid? can't say...LOL).
I shoot idpa and combat (PPC) with my glock 43 - i've shot it in the rain, heat, cold, while seated, standing, moving, backing up, through a window, from inside a car, throu the two open doors of a minivan, at moving targets, while lying down, from the draw (unaimed at belt level) and more.
So I missed the groundhog in my back yard at 35 yards by 6"... i'd have hit a human sized target no problem.