I grew up in a house where the guns were either hung on the wall, or tucked inside the corner of a closet. I had the fear of God put into me from my dad, and taught guns were a tool not a toy. I was allowed to use these tools at a very young age, and respected what they could do, as well as what my dad would do. I can remember pick up trucks with gun racks / shotguns in the back window in our high school parking lot. (we also had drive your tractor to school day) I'm sure growing up in a rural area where everyone had a gun didn't hurt either. My kids grew up in a house from day one with firearms. They were allowed to see, touch, handle and I would explain the function whenever they asked. They also learned that guns are tools not toys, and I think a good bit of respect or fear. (you would have to get their opinion on that) All 3 of mine started shooting trap in 4H at the age of 9 or 10 years old. 4H helped to reinforce safe gun handling and a respect for the tool. Our local club had a great advisor, who really stressed safe firearm handling. He made wooden firearm replicas, and the kids were required to use that on the shooting line until they demonstrated safe handling 100% of the time.