Quote Originally Posted by dehro View Post
could it not just be that the doctor is a trouble magnet and since he likes earth, trouble comes to earth..because history tends to form around him on account of him being the last timelord and therefore also some sort of ...history magnet (yes, I know, the master, his daughter etc etc, but that's still the premise of most of the tale)

in other words, if he did like mars or venus or Raxacoricofallapatorius (yes, I had to google that), then most of these events would happen there...
but they don't, and aren't we lucky, that we get front-row seats?
The events in "Turn Left" do a pretty good job of nixing that idea - even without the presence of the Doctor, all the badness still came to Earth.