Answer: Not many.
There are always the few that pull this off. But for most, the injuries pile on, social life becomes more important, they are sick of hurting all the time, etc. My kid, if she stays with the sport through high school graduation, will be a level ten for five years, and that is more than enough for her...we take it day by day, month by month, etc-you get where I am going with this....we have no idea if she will make it to the end. People seem to think that once you make level 10, you are golden. Not so. She hurts every day, and always has nagging pains. That is a lot to take, even when you are passionate about a sport. And when it starts compromising how you perform, it can be a problem. So far she has managed to hang in there. But if the day comes when she wants to walk away, I will have no regrets for her. I am so proud of her and what this sport has taught her, and the person she has become....it has given her so much, and it has also taught me a lot as a parent.