So I should have a gun to insure peace, right?
Bad people with weapons are dangerous.
Good people with weapons are stabilizing forces.
The equation does not change whether the weapon is a gun or an atomic bomb.
But Nully, you’re not a homicidal psychopath that daily preaches from the rooftops about martyring your friends and neighbors in the hopes of forcing some bigger psychopath to appear and destroy the world.
But you do live in an area that has people of a similar bent.
Uh.. hmm..
Any escape plans yet?
That depends on who you are and what your intentions are. If you are a murdurous thug with a healthy rap sheet, I doubt your having a gun will bring about any peace. If you are a law abiding citizens looking out for the best defense of yourself and your family, I think it could ensure some personal peace.
Your premise is flawed however. For your hypothetical gun to be an effective peace maker, you would have to let all would be criminals that you have the gun and intend to use it with lethal intentions should you be attacked. Then, your gun could serve the purpose or intent of insuring peace.
The state may help you by making it legal for all good citizens to have and use weapons in self defense. In this way, guns can and do insure peace by deterence.