As a gun owner, and at times, owning a small arsenal, the issue is not gun ownership. It is the easy access to them, and once you own one, there is no way to lose the right to have it. If you own a gun and your situation changes, there is no way to get the gun removed. There is no one a doctor, a teacher or cop can call or inform that you should no longer have one. The laws and the permits are in place to stop/permit you from buying or selling a gun, but if I give you one, in all 50 states, you legally own a gun. I can literally sell you a pencil for $200 and throw in a free AR-15. No permits are need to buy ammo, nor proof of even owning a gun.
Should we ban box cutters because of 9/11? Should we ban personal purchasing of fertilizer because of the Oklahoma City bombing of the Federal Building? Should we ban any form of personal luggage because of the Boston Marathon bombing?
It's not the gun.