When Sherlock is left alone, without a case, and without John, he falls back to old habits, habits John is yet to find out about. Sherlock falls into a put of self loathing and John is the only one who can pull him out.
I thought that said shirtless and I was like, "Ooh Sherly. Getting some action already?"
There is no appeal. The only thing that's good for is focusing on that thing you would never do otherwise but since there's no damn wifi you can only read you Japanese self study book and jot down novel ideas!
He should watch supernatural or doctor who. He won't be bored
Sherlock, just call Mycroft over and play Cluedo or something