I've been on very high doses and very low doses... makes no difference in my mood... at least that I can tell. However, I do seem far more confident, cocky, arrogant, and "in-control" when on though. But I don't fly off the handle.
I do think there is validity in the chemical imbalance causation. It is quite unwise to say that steroids do not cause certain inequities... because clearly they do. How you choose to respond to an elevated level of agression is subjective. One can choose to thwart their dominance, or subdue it. It should be left in the weight room though... and there is no excuse for social boorishness.