Interesting that you bring that up because if Sam would think about Ava and Jake he'd realize that the more he uses his powers the deeper in he gets. He's getting so high on his own abilities that he's losing the capacity to judge right from wrong...if the writers really want to go all the way with this I think it'll be great but they can't be wishy-washy about it. They can't decide that of all Azazel's kids only Sam can fully develop his powers and still remain himself, remain good. Can't have your cake and eat it, guys.