If someone is in my home, I am not leaving the bedroom unless it is absolutely necessary. My kid is grown. it is just me and my woman, in bed. I guess if someone fvcks with my dogs I am coming out blazing. But seriously, I am taking a defensive position, period. Take my shit, it is insured. I guess you get a seven year old TV and a six year old computer, yippee. You come through the bedroom door, God help you. And I know you are in here, my dogs are going apeshit.
I do not need to hit a light switch. Both of my ready to get home defense options have lighting. And a green laser on the M&P. You can stare at a bright light while your chest gets holes. I can see if the laser shines through your holes to the floor after you do down.
I have one shotgun with a pistol grip. I can maneuver fine with it. I have enough bedroom light so I can see to get it. I don't see the issue, other than you won't back down from your position.
Bottom line: you get what works best for you. I dispelled your myths about spread and penetration because they are myths.