> How many guns does one need?

I saw several estimates that agree on average somewhere between 8 and 10.

A couple of bolt action rifles for hunting, rimfire for plinking with kids, a pump-action shotgun stashed somewhere for home defense, a pistol to carry concealed, another pistol as backup, grandpa's revolver that is now a decoration, and three old rifles in various state of decay at the back of the safe that everyone forgot about - those are all very typical.