I understand your point, Tom. However, where available, firearms have become the first weapon of choice, even in "primitive" or non-industrial societies. It is a rare individual indeed who, having seen the power of a gun, would choose a knife, sword, club or other similar weapon over a gun.
This isn't to say that many, many crimes and killings aren't carried out with such weapons, but as the saying goes....no one really chooses to bring a knife to a gun fight.
