"It would have been," said Sam, shocked that she'd think otherwise. "Riley, you're important. You've saved people. I mean, if you hadn't been around, I'd be the devil right now and the apocalypse would have stopped. You singlehandedly stopped that from happening and saved Cas. You're amazing." And she was beautiful and she made him happy, but he wasn't comfortable saying that. He didn't know why his crush was so strong, he hadn't had something like this since middle school or something... But she was so beautiful. Luckily he didn't stutter around girls or anything like that. That'd make it way too obvious. "You're important. If not to the world, then to us. But the world needs you, too."
Cas nodded. "I can agree to that. Lucifer would have wrecked havoc by now. I imagine I would be dead. he would have no further use for me and Lucifer isn't sentimental. Is it something in hunters that you believe that your presence is useless? I have heard both Sam and Dean say similar things. That it wouldn't matter if they were dead. It is not true, I assure you."
He looked up to Samandriel. "Odd of you to save her, though. You are not like other angels. You went against your orders. That's not easy to do. And you are young. I never would have rebelled at your age." Castiel was alive at the same time as the archangels. Though he was much younger than them, he was old for an angel. He was part of the second batch that their father created. "I am glad to see that not all of our family is so subservient to the will of others. Though you still take orders from Heaven. I understand that. Pulling away from Heaven is dangerous. It involves a ''boot camp' of sorts. They do not like letting go of their soldiers. And of course, every angel in Heaven will hate you if you do. Make your decisions wisely. I do not know if I did."
Sometimes he missed his siblings. But he never missed being a soldier of Heaven. Never. He had made the right decisions, to stand by Sam and Dean. The thought made him feel better and then Gabriel showed up. With a bag. Of squares?
Cas looked at him, squinting his eyes. He looked more like himself than he had last time Gabriel had visited. He recovered from torture quickly. It definitely wasn't his first time. "What are those?" He took the bag and immediately smelled the ambrosia. A youthful, rare smile popped up on his face, something that the Winchesters had never seen before. He said "ambrosia. Gabriel, how did you get this?" He took a bite of one of the squares and offered one to Samandriel. All angels were given ambrosia as children. it was one of the pleasant parts of childhood for angels. It tasted absolutely incredible and at the same time it was good for you. But angels were never allowed to eat it after around age three thousand.
Sam laughed when he saw Cas make that face. It made him look like a whole different angel. Also he wondered just how much they knew about Cas. They hadn't known that he'd been friends with Gabriel until recently, and really they seemed more like older and younger brothers. he felt like he was missing all of Cas' backstory, but they just didn't have time to find it out.
"See?" said Sam. "Even Gabriel's important if he can make Cas happy."
"Of course Gabriel is important," said Cas. "He is an archangel. The are infinitely more important than regular angels like myself. But yes, I agree. Every person has a part to play on this earth and yours will not be done for some time, I hope."