I always believed this... and it prompted me to buy a Remington 870 tactical.
First: even though I don't live with children I don't have "one in the chamber", just seems too dangerous to me and if I need more than 6 rounds of 12 gauge then I'm in some serious doo-doo.
Second: after hearing much talk about home defense (about how difficult it is to go through a house with a shotgun) I actually tried walking though my (empty) house with a shouldered shotguns and yes it is super awkward.
Thus if I ever wanted to 'clear my house' I would use the 9mm (I know that clearing your house not recommended in the event of a break in)
Third: I also don't keep my 9mm loaded but I would think the sound of it being racked would be a sign to any bad guys I'm ready to defend myself.
Forth: I am keeping the 870 for the zombie apocalypse.
