Um, I cant be the only one that disputes your logic. If by cake, you mean a selection of guns in colonial times, by all means get a front end loader and have at it. If you are willing to dissect your straw man you'll find you aren't talking about cake. You are talking about ..oh, how about a garden. In this garden as time goes on you are growing more variety of things and more of them. So someone comes to you and says hey, you can't grow that and regulates part of your garden away, gone is the bazooka or opium. Then comes back a few years later and says hey, what's that there? Out go the tommyguns and grenades. Then a little later as people come up with more creative and efficient ways to kill each other we decide maybe high capacity clips, high tech ammo, and even some models are just not things we want casually available in society. Personally, I have no idea what a reasonable amount of firearms per person is but we know excessive when we see it.