Games of strategy can be good teaching tools up to a point. The problem is that not everyone places a high enough value on winning a game to spend the time and effort involved in mastering it. What does a kid get for winning a game of chess? He gets to say he won. Big deal. That's not enough of a reward for some people. But someone who isn't interested in winning at chess might be willing to devote hours to learning the strategic skills needed to become a good hunter or fisherman. The difference is that you can't eat a chess game.