Is Your Volleyball Team Fun?

It is a constant struggle for me to coach 10-13 year olds and keep a perspective of what is going on in their brains. What drives them; why do they like to play; and how do I help them get that competitive spirit flowing through the bodies? Is it something they are just born with or can the drive to succeed be taught and developed? I'm really not sure, and I would love some feedback on this. Is it all that important in the greater scheme of life? I was so competitive that I don't understand not being that way. In coaching my daughters and their friends, I do try to understand and be positive with the player who is just having fun hitting the ball around and being with her friends. I think, however, there is a time or an age in their volleyball life when they have to have the drive to compete. After all, it is a competitive sport. The alternative would be to just play in the back yard or join a non-competitive recreation league. By high school players who don't quite measure up are cut so that their teams won't be too large to work with. Most schools don't have the gym space or coaching staff to accommodate all the players who come out for the teams. I hate to see dreams squashed and I would love all my players to have the desire, talent and work ethic to succeed to the highest level. Knowing that this isn't the way it works, I would then like to have all my players love the game of volleyball. I would like to see them play the game well enough to enjoy it throughout their lifetime. It is a game and should be fun to do. I would welcome any comments of this subject.