I think the better way to put it is quite simply to point to the laws of gun safety. A firearm is a lethal instrument. If one is going to shoot something it should only be done with the implicit assumption that it will destroy the target.Lord Mountbatten Reborn said:The human body is not Hollywood-resilient. Getting shot in the leg is still likely to kill you, for instance of an artery is hit. You shoot to kill or you don't shoot at all. That's how it works.Pinkamena said:Uh, no. I'm pretty sure bullets in your legs will persuade you to stop running/moving.
More to the point, hitting a target center of mass is simpler than in the leg and more predictable. Even at point blank range, were I to discharge my Sig into a person's torso, the current load of ammunition is not likely to penetrate the target. By contrast, the bonded hollow points currently loaded in my gun could relatively easily punch through a lower leg even if the resulting penetration was by little more than bullet fragments.
I mean, it seems fairly obvious to me. You don't aim at the Torso because that is a particularly effective place to poke holes if you intend to kill someone: you do it because it is both the slowest moving part of the human body and because your rounds have the least chance of exiting the target.