Sorry, typo Danny, I guess because The Doctors spends a lot of time at Earth. There was that period in the 70's where he was exiled to Earth, and the original run did start with The Doctor in exile on Earth. So technically speaking he could consider earth a home, or a second home
But I see your point.
What I really loved was those flashbacks of Galifrey and the Temple of the Time Lords (I think that was it's name). I brought back some memories of some recorded episodes I saw
and I thought the costumes were quite true to lore.
trivia for you: This episode marked the first time that we have seen a black time Lord on screen