Those who oppose private ownership of guns often repeat the mantra that “guns are only designed to kill!” The fundamental fact they always ignore is that design and purpose are not necessarily the same thing.
A thing can be designed for one thing, but it may be intended for purposes that are diametrically opposed to its design. Consider nuclear weapons and intercontinental ballistic missiles. They are obviously designed to kill millions of people and create enormous destruction on population centers.
In my lifetime the designers of nuclear weapons in the United States intended to create objects that could kill millions, but the purpose behind that design was not to kill, but to deter the murderously criminal Soviet Union which had as its goal the enslavement of the entire human race. That is not an exaggeration.
The Soviet Union is gone now, but the existence of totalitarians regimes with nuclear weapons is still a reality we cannot ignore.
So it is with many guns. They are designed to kill, but the purpose of the vast majority of people who buy them for defensive purposes is to deter killers and criminals who live in our midst. In essence these gun-owners bought guns designed to kill for the purpose of saving life, not taking it.