I agree 100%. No matter what, something fun has to happen when you take a kid hunting or fishing with you. I have 3 boys (10,8, and 2). The 8 and 10 year old absolutely love fishing and would go everyday of the week if possible. However, my 10 year old is the only one that shows interest in hunting. The 8 year old could care less if he ever walked in the woods. the 2 year old? well mom puts her foot down on that one (so far).
I try to make it as fun as possible for them. Show them signs, point out other animals, tell them about crops, tell them old war stories of you and your hunting buddies. Make him/her feel like they are part of a group.
It tears me up that my 8 year old isn't remotely interested in going with us. I've tried to make sure me and my 10 year old have a good story to tell when we get home so he can hear how much fun it can be and maybe spark some interest. I won't ever force him to go though. I'll just keep asking him and telling him about it hoping he'll want to someday.
When I am out in the woods with my 10 year old, I could really care less about getting a deer or really hunting hard for that matter. Let's face it, hunting for a kid may not be the most exciting thing for them. Have to find a way to make it fun. Step in a mudpuddle, pretend to lose your car keys, trip over a log, sit someplace where you'll see some deer, whatever you have to do to make each hunt have a story.