Why have I started playing tennis?

"Sometimes you're just happy playing. Some people, some media unfortunately don't understand that it's okay just to play tennis and enjoy it. They always think you have to win everything, it always needs to be a success story, and if it's not obviously what is the point. Maybe you have to go back and think, Why have I started playing tennis? Because I just like it. It's actually sort of a dream hobby that became somewhat of a job. Some people just don't get that ever.” http://www.atpworldtour.com/News/Tennis/2012/10/41/Shanghai-Thursday-Federer-Recalls-Rise-To-Top.aspx