You're sitting on the couch watching TV when 5 guys crash through your rear slider and you have 3 seconds before they are in your living room with you. What do you do? Is the element of surprise and disparity of force too much to overcome? Do you wait until they separate to search the house before drawing and taking down the one or two in sight, hoping you can escape into the night with your family?
Well, I know what I would do in those 3 seconds... try to pull my 9mm from my holster and start shooting. Could it be the cops doing a no-knock, sure - I guess I'll be dead and my family would be well-off if that were the case.