"...handguns for rifle cartridges and slap scopes on them, but we still hold them in our hands just like Colonel Colt told us to..."
I think that the ATF has a hand in that (no pun intended) too, since putting a shoulder stock on a handgun is kindasorta illegal...
I believe that proves the point.
Why is it illegal? A shoulder stock renders a handgun less concealable and maybe more accurate and controllable, which seem like qualities that BATF ought to encourage. But-it is illegal. Why? Because it is just flippin' wrong, that's why. You would never imagine John Wayne drawing his peacemaker, clipping a stock on it, shouldering it and firing at some miscreant. Wouldn't happen.