"The world we live in has a history of male domination, of stereotyping, of resistance to change, of playing it safe. Doctor Who has never been about that. The Doctor in all his incarnations has always been a passionate defender of justice, equality, fairness and resisted those who seek to dominate or destroy."
A nice opinion piece by Colin Baker, or Doctor #6, on The Guardian, with a very good point about what it means to be a fan: