We're talking angels on the head of a pin.
Most of us will never have our home invaded while we are there.
For those of us who do, most invaders will flee as soon as they realize someone is home.
A smaller percentage may initiate an attack against us.
Most of those will flee upon realizing we are armed.
Of those who stay and fight, most will leave after the first shots are fired.
Of those who stay and fight after shots are fired, most of them will leave after they've been hit.
A tiny percentage of a tiny percentage will stay, fight, take multiple hits, and keep coming.
I agree, we need to plan for the worst eventuality. But the difference in outcome from using a .22 or a shotgun with birdshot or a M60 machine gun, is probably so statistically insignificant as to be something to worry about on the same level as what to do with the money if we win at Powerball.
Just producing a firearm is the largest difference you can make in a fight.
You can't make that guarantee on the net or in another mans home.
I do know people who have survived birdshot to the chest and center mass at your sack-o-taters distance.
However, I personally have never met anyone who survived buck or slugs at sack-o-tater ranges. I am not sure why that is?
Survivng a bear or shark attack, they either stopped the attack or you stopped them.You can also find people who survived head shots with a 9mm or bear/sharks attacks.That doesnt mean those things cannot be deadly in most cases.