"... That makes sense." He'd been quiet throughout the explanation, switching between watching Cas' expression and glancing at the scene, but he feels almost... embarrassed for the question, has sudden clarity as to why this would be important. Sam looks contemplative, himself, arms crossed as he turns forward again and thinks it over.

"I guess we don't have a lot of those moments, really," he says slowly. "Where we're not all thinking about whatever other crap is going on, or... how many bodies are dropping around us. I can get why you'd want to come back here."

His own scene had been a little like that, back in Bobby's house. Simpler times.

"Didn't mean to say it wasn't important."