However, there is one thing I observed among some of those fans that made me raise my eyebrows.
Many of those fans thought that Dean was always abusive towards Sam, from S1, or from when they were small children. However, there were some who believed differently: A number of fans believed that Dean and Sam's relationship became abusive gradually while they were adults, generally pinpointing the period from S3-S4. These fans analyzed the relationship during the period, and after. They talked about Dean, about his motives.
I never once saw a fan talk about how Hell-related trauma might have played a role in Dean's behavior.
It couldn't not play a role. Spending a year anticipating going to Hell for someone and then going to Hell and then having a horrific experience and then coming back...I don't know, but I think it would have at least some kind of effect on your relationship with that person, don't you?
And yet, I'm quite certain I never heard any of these Sam fans talk about it, at all.
I, for one, do not think that having bad things happen to you excuses you doing bad things to other people. I got the impression that many of those Sam fans agreed. So why would it be bad to acknowledge that Dean's Hell experiences played a role in who he became? Was it because they thought it would make him more sympathetic?
What's up with that?