First, it's not a lie. I'm not a hunter, so my guns have never been used to kill any animals. I have a 12 gauge shotgun for skeet shooting and a .22-cal rifle for target practice. Never killed anything with either of them.
Second, you don't know very much about guns, do you? Guns are made for more than just killing. Some guns are made for target practice and will never be used to kill anything. Some guns are made for home defense and hopefully will never need to be used. Sometimes a gun just needs to be seen or heard to be effective. The sound of a pump action shotgun being loaded often will scare off a home intruder without having to fire a single shot.
Many guns are never used to kill anything and the vast majority of guns are never used to kill a person. If that wasn't true then there wouldn't be very many people left in this country.