sam, after seeing his brother murdered before his eyes, losing his body, spending months searching for him by torturing and deceiving others, finding him as a demon, spending days curing him of his demonic state, watching him be corrupted by the mark of cain, making a suicidal quest to save him from the mark of cain and prevent him from becoming a demon again because he doesn't want to lose him, unleashing darkness and dooming humanity, killing thousands because of his decision, all so that in the end he has to watch dean sacrifice himself for the good of all

"According to your plan, the world loses you, and me -I- I lose you too, and that is unacceptable to me, Dean. Unacceptable. Totally."

Bonus:

Supernatural S11E23, Castiel to Dean.

1.04

This is John Winchester. I can't be reached. If this is an emergency, call my son, Dean. 785-555-0179. He can help.

11.23

DEAN: What about us? What about Earth? CHUCK: Earth will be fine. It's got you...and Sam.

and yet...

1.09

DEAN: Dad? I know I’ve left you messages before. I don’t even know if you’ll get ‘em. But I’m with Sam. And we’re in Lawrence. And there’s somethin’ in our old house. I don’t know if it’s the thing that killed Mom or not, but… I don’t know what to do. So, whatever you’re doin’, if you could get here. Please. I need your help, Dad.

13.01

DEAN: Okay, Chuck… or god, or whatever. I need your help. See, you– you left us. You left us. You went off. You said… You said the earth would be fine because it had me… and it had Sam, but it’s not, and we’re not. We’ve lost everything. And now you’re gonna bring him back. Okay? You’re gonna bring back Cas, you’re gonna bring back Mom, you’re gonna bring ‘em all back. All of ‘em. Even Crowley. ’Cause after everything that you’ve done, you owe us, you son of a bitch. So you get your ass down here and you make this right, right here and right now. Please. Please help us.

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