I grew up on Mutual of Omaha's Wild Kingdom; I was transfixed to the screen for the short time my mother allowed it ;) I've also enjoyed all the shows you've mentioned too!
I also feel your conflict :( Exposure to animals can awaken something in a child, and not all families can afford to see the real thing in its natural habitat. Though many of us neglect our own back yards, when it comes to nature discovery. It's easy to take that which is all around us for granted :(