User blog comment:TomWellingishot/Favorite Winchester brother?/@comment-3481504-20111229204919/@comment-5605779-20111229220344

I agree with you on this. Sam has a tendency to let his personal feelings get in the way when he is hunting (ex. Amy's killings in The Girl Next Door and Madison's lycanthropy in Heart''), which in some cases, is perfectly understanable. Dean, well, the same goes for him (ex. Lisa and Ben's abduction in Let it Bleed but that aside, as Jo stated in Defending Your Life, he carries a whole crapload of guilt with him.