How come no one wants to play for the Boston Celtics?

Jermaine O'Neal didn't want to be traded to them, and now Kevin Garnett said the same thing. To top it off Paul Peirce is fustrated with Boston and wants to be traded away. Are the Celtics that bad? Or is it something else? I would think a lot of players would like to play with such a historic team, with a winning history.