Oh, Dean.
It's kind of strange, because we typically think of Sam as being the one who is so reluctant to be a hunter, who wants to have a "normal" life, etc. But we (or at least I) never seem to consider the fact that DEAN is just as much a reluctant hero. I mean, he takes to it better, but I think part of that is because he's a natural people-pleaser, so he took to hunting to make his dad happy. He would have been just as likely to become a mechanic if that's what made John happy, you know?
Anyway, this episode made me want to write schmoopy, post-episode Sam/Dean I-love-you-so-much-I-gave-all-that-up-for-you sex. :D