Scenes from the Pilot
I think there are two camps of people who see Sam and Dean in two essentially different ways. There are those who see them as damaged but healable. I think that Carver and Singer are in that camp. Hence, Carver’s agenda to have the boys learn during their time apart that they can survive without each other. He’s effectively removed their co-dependence, but even he sees that they belong together at least for the near future.