[ Cas's chin lifts, impassive at the reminder of Sam's age. He was never a child, and from what he understands, neither were the Winchesters. Still, fourteen seems old enough to Cas to understand right from wrong, and "de-aging," if that is what it was, and not some variation on time travel, doesn't change a person. Talking to them can. De-aging any of them wouldn't change them. If you ask Cas, that was a mistake. ]

Have you perhaps noticed, Dean, that we're not in the real world? This isn't a second chance that God gave us out of the goodness of His heart. This is a purgatory. We're all already dead. So either we: "A," wake up from this god-child's dream with everything the same as we left it or "B," we learn something and take that back with us to reality. Which do you want for Sam?