That should give a little history and also describe many guns. They are dangerous because that is their nature. I do not see them as life saving unless using them as self-defense.
Guns are dangerous, obviously. You can't call them life saving, because their main purpose is to take the life of another. Even if you have the intention of just injuring someone to protect yourself, that still will cause a danger. Even though guns are dangerous, they could be life saving towards yourself or someone which you are trying to protect. The person who you are defending against, will be put in danger, because "duh" your pointing a gun at them.
Well, if you kill someone, that means it's dangerous...but if you kill some one that's trying to kill you, that's life-saving (of your life that is)...
Good question. That depends on who you would kill the gun with. If it were in self defence, it would probably be dangerous. If it was to kill a person that is a threat to many people than it would obviously be life-saving.