All I can say is that I was too immature to have any contact with firearms at 14...and 18.
Killed my first deer with a single shot 20 gauge, while sitting alone in a tree blind, when I was 9 years old. Have carried guns all of my life and I have not ever needed or felt the need to use on on another person.
Not one time has one of my guns ever left my house, car, or holster to go hunting or killing by itself.