Crowley cannot recall a more miserable yet exciting set of years than the seven years he's known the Winchesters. The constant death threats, the apocalypse, the kidnapping, the forced blood addiction, the withdrawal, the return of his obnoxious mother, the emotions, Abaddon, Lucifer, having his throne stripped from him, the humiliation, and just the general bullshit of every day life had made him stressed and tired.
He loves being the king, or at least that's what he thought. But a lot of alcohol and thinking made him realize he really doesn't. He hates the paperwork, he hates the demons, he hates everything, and fighting for the throne just isn't worth it anymore.
So here he sits in front of the Winchesters, watching them fret over how in the hell they're going to stop Lucifer this time.
"The throne just isn't worth it anymore. So, after we catch Lucifer in the cage, together, I’ll seal the gates of hell. You will never see any demon again, except of me, of course.”
He knows the boys will be much too oblivious to see his real plan, the much more depressing one. Even if they did, they wouldn't be worried anyway. However, he hadn't considered you. You, who is now dragging him off to a separate room, while the Winchesters and their pet angel watch in shock.
"What is it, dear?"
He asks sarcastically, prepared to deflect the hell out of this conversation.