Re: 800th Episode - 2014 Christmas Special (Rumour's/Poss. Spoilers)
The line made sense, because he really DIDN'T want to go. And, it was a great antithesis to his trademark line: Allons-y*!
*(its French, for Lets Go!)
"Spock...?" Kirk said, whispering.
"I am... most pleased to see again, Captain" Spock formally replied.
McCoy shook his head in disgust. "Oh, for crying out loud, Spock. Its been eighty years!"
"Seventy eight point four years, Doctor."
The Holy Three meet again, in The Return