Re: Matt Smith's Departure Confirmed.
People, as a rule I just made up from personal observation, are generally more judgmental of such qualities in women and likewise in female characters. Look at the way female politicians are held to a much higher standard of likability than their male counterparts as a perfect example. A female Doctor could be just as quirky, and have her occasional "NOBODY HUMAN HAS ANYTHING TO SAY TO ME TODAY!" moments, but she would probably need to be soft around the edges (in the same way the modern Doctors have been for the most part) for the sake of keeping her likable.
"There is no reason why good cannot triumph as often as evil. The triumph of anything is a matter of organization. If there are such things as angels, I hope that they are organized along the lines of the Maffia." - Winston Niles Rumfoord.