Nobody should have a gun, because an accident it's very fast arrived. Imagine there are an burglar and you fire on him, and in reality it's not a burglar but a friend come to make you a surprise. Or a child plays with the gun, he's thinking that it's a toy and he fire on her father to play to cowboy what happen? A father dies and a child is traumatized, so many stories like that just because there are a gun, it's stupide to spoil the (family) life and so many lives to be regretted. The argument to be safe is not applicable to everybody. There are some people very serious and healthy and other are unhealthy or paranoiac... we can't generalize a rule. It's for it that it's commplicated to authorize in some and not in the others...this is why nobody should have a gun.