I just thought I'd mention that my 5 year old nephew* got to accompany my brother on his very first hunting trip recently. I'm not sure exactly when this was, but it was mentioned at last weeekend's soccer game. My oldest nephew is in middle school and has his own shotgun.
Kids, guns, responsible gun ownership and father / son bonding. That's what the "gun culture" is all about. Kids like to have fun, and as almost every newbie shooter will tell you "this is FUN."
Also, making Sarah Brady and the rest of the anti's cry is always fun, so take your kids shooting, teach them the four rules (or 2 rules) and grow the ranks of future gunnies.
*I think he's 5. I can never remember. With so many nephews and no nieces it's hard to keep track