(After Dean got his memories recovered, Sam and Dean discuss how Dean looked happier when he didn't remember anything about their past...)

Dean Winchester: Well, look, was it nice to drop our baggage? Yeah, maybe. Hell, probably. But it wasn't just the crap that got lost. I mean, it was everything. It was us, it was what we do, you know? All of it. So... that's what being happy looks like? I think I'll pass.