Originally Posted by
aleCcowaN
The subjunctive tangle were every English speaker seems to be swamped; a really hard nut to crack.
Emotion and subjunctive are not closely related, more related than emotion and indicative. The King's statement is just a proposition, then it contains the verb performing the actual action it is proposed: ¿Por qué no subes la calefacción? ¿Por qué mejor no salimos a bailar esta noche? ¿¡Por qué no te callas!? Exasperation is expressed here by tone.