When I was younger, it was common for kids to have access to firearms, especially in rural areas. In my case, we kept rifles handy.
As a teen, I responded to noise in the house. When I was alone with our dog. Our dog too point and I followed with a rifle. Fortunately, whatever or whoever was making the noise was gone. Where we lived, it could have been a two or four legged critter.
Flash forward to now, I would never allow my teen to have access to firearms. I trust some teens, but not mine. It is an individual thing. Not every kid is up to it.