who wants to be sad?

Tolstoy does! Ahem:

“Don’t leave,” was all she said to him, in a voice which made him wonder whether he ought indeed to stay, and which he remembered long afterwards. When he was gone, she also did not cry; but for several days she sat, not crying, in her room, not interested in anything and only saying from time to time: “Ah, why did he go?”

But two weeks after his departure, just as unexpectedly for those around her, she recovered from her moral illness and became the same as before, only with a changed moral physiognomy, as children get up with a different face after a prolonged illness.

-Tolstoy, WAR AND PEACE, tr. Pevear/Volokhonsky (Vol II, Part Three, XXIV, 482)