Spectromixer
Member
The Doctor believes he just failed to save Bill and Missy. He also failed to sacrifice himself on the floor. He survived and somehow ended up on the TARDIS. He's remembering his last two regenerations (I don't want to go and I'll always remember when The Doctor was me) and is reluctant to start over and go through all the motions again.
I'm sure the Christmas special will touch on it more.
I'm sure the Christmas special will touch on it more.