Guns are used for a variety of reasons, reasons that have no relation to death or murder. Those who legally buy and carry guns often do so because of reasons that are rooted in security and protection. Often the guns civilians will buy will be so that they can protect themselves and feel safe at all times. It is a well-known slogan that "the only thing that stops a bad guy with a gun is a good guy with a gun." This slogan highlights one of the many reasons why civilians want to be legally armed with a gun.
Moreover, many people use guns for recreational reasons, such as hunting or shooting targets for fun.
The guns that people use to kill others are the same guns that are often used for nonviolent nor ill-intentioned reasons. Therefore, not all guns are made exclusively to kill; the actual person who has the gun chooses what to do with it.