10. They're The Most Patient People You'll Ever, Ever Meet
Because, let's face it, all they ever do is wait. The Doctor finally returns to our screens and then he's gone again before you can say "Raxacoricofallapatorius". Or "The Mighty Jagrafess of the Holy Hadrojassic Maxarodenfoe". Either way, he's always gone too soon. But the great thing is, he'll be back again before you know it! Promise.