Scratch the surface of any cynic, and you will find a wounded idealist underneath. Because of previous pain or disappointment, cynics make their conclusions about life before the questions have even been asked. This means that beyond just seeing what is wrong with the world, cynics lack the courage to do something about it. The dynamic beneath cynicism is a fear of accepting responsibility.
Sport is a very important subject at school, that's why I gave Quidditch such an important place at Hogwarts. I was very bad in sports, so I gave Harry a talent I would really loved to have. Who wouldn't want to fly?