So there's the end of Rose's world, which happened at the beginning of the episode. And there's the end of Earth, which we saw. There's the end of Gallifrey, which we finally heard about for sure. There's the end of Jabe, and Cassandra, the end of purity and "purity," the end of Rose's Companion interview, the end of the Doctor's "not a crazy alien monster" interview, end of distrust, end of fear. End of loneliness. If you live in all times and places simultaneously, I imagine that last one's a pretty big world. I'm glad it's ended.