I own several. Off the top of my head, I have:

1873 Navy Arms Black Powder (original) - shot only on rare occasions
Beretta 96F Centurion in .40cal
Sig Sauer P239 in .40cal
Smith & Wesson 1006 in 10mm
Smith & Wesson 686 in .357 mag.
Remington 870 combat shotgun 12 ga.
H & R Single Shot 20 ga. (skeet and trap gun)

I grew up around guns, hunting, target shooting, etc.
I learned at a very young age about the responsibility that comes from guns. The most obvious and important is the safe handling of firearms. Then the maintenance and it's importance to firearms so they operate safely. I think that parents if they take the time to PROPERLY instruct their kids about firearms, there won't be any problems. As for my instruction, it was pretty simple, if I wanted to look at one of the guns, I simply asked. Then my dad or grandpa would pull out the gun in question, and answer all my questions, and let me hold it. I think this is the exact reason why I never got into trouble with "messing" around with the guns when home alone. I knew all about them, I held them, I had even shot them, so there wasn't any curiosity about them. As for the guns I have now, I have a couple of them for work related reasons, the others are for defense, and a couple are simply investments.