super sooner?

Did you notice how many really young players seem to be doing well in the French Open. Steffi Graf was a phenomenon in early 80s when she was ranked in her early teens. I am surprised to see many teens in the final rounds of the women's tournament at Roland Garros. There is 17 year old Ana Ivanovic (I think), and then there is 15 year old Bulgarian Sesil Karatantcheva..all in the quarter and the semi final rounds of French Open!!! Of course, how can one forget Martina Hingis and the latest heart throb Maria Sharapova (they tell me she is over 6 feet!). Boris Becker was a big deal when he won, I don't remember which title (think it was Wimbledon) and he was 17. Nowadays, it seems like the slogan is pretty much, 'Catch them young'. Even the William sisters are not that old, but I am not sure when they started out. Personally, I have not liked their game a lot. It seems to lack the class and the style of Steffi Graf or the more recent belgian Henin-Hardenne. Well, the point is are we pushing ourselves too hard and too fast. How long can these girls who have already touching peaks last? Can anyone stay around and do as well as the ever green Martina Navratilova? I know the game of tennis has a lot of wear and tear (going less of wear now, aka Anna Kournikova, hehehe)..so, are we just pushing human abilities to a new peak?tring greater accuracy and perfectness?