> Guns makes lives better if you are the disadvantaged and is at the receiving end of the abuse by the powerful.

...only if you have the gun, you know. Which the disadvantaged people tend not to. In fact, let's generalize your statement a bit: "Tools of power and coercion make lives better if you are the disadvantaged and is at the receiving end of the abuse by the powerful". No, they don't! They do the opposite for very obvious reasons.