Banning guns doesn't work, not just your basic form of "gun control" mind you. Gun bans are the extreme scenario when it comes to 2nd amendment issues. Gun control laws like background checks and registration are alright in my book, at least the State is trying to keep guns out of the hands of the crazy and the criminals in such a way that it doesn't prevent law-abiding citizens from owning a gun.

Now I agree with you, banning guns altogether is just dumb and I'll you tell why that is so in a few easy bullet-points:

-State X has gun control (And they use it.) but no gun bans, most can purchase a gun through the usual methods. The usual law-abiding citizen can legally purchase a gun without much hassle.

-Those with criminal records or meantal health issues (VA Tech killer) are either limited in their choice of firearms, or just plain not allowed because they are a danger to society at large. These people, not having access to firearms outright, will usually try to obtain one through illegal channels. And in the case of the VA Tech killer, he gets lucky because of human stupidity (Why do you give a crazy guy a gun? Why? )

-Criminals have guns, but so do we, the odds are even at least in that aspect. Add that to the fact that criminals must weigh the risks involved in a mugging or home-invasion because the potential victim might be loaded!

-If State X bans all sales and usage of guns, all people cannot buy firearms for protection. The law-abiding citizen has no way of obtain a legal weapon and most of these people have no idea how to obtain weapons on the streets.

-However, these methods are still known and open to the criminal element of society. In the end, they get the guns, but we are left defenseless. Crime rate goes up because criminals now know that most don't have weapons at home, so the odds are now on their side.