I love this episode! I love the end of the world being not only something other than war, but an accident through a series of small happenings. I love the Generals attempting a peaceful solution to save the world. I love the scene of Bill doing anything to save the Doctor. I love the creepiness of the monks. The solution of love doesn't make a lot of sense, when (1) Bill loves the Doctor, not the monks, and (2) the fear and strategy were also surely bound up with love for their family and world. But that doesn't matter too much when the story is good. My only real issue with it is un-disabling the Doctor before his regeneration.