Like so many issues regarding chemical use, I am convinced that this is a very personal topic. Everyone has their own body chemistry and personality. I am ordinarily a very positive and fun person, very outgoing and party-oriented, so much so that people comment on it. On gear, (just statrted another cycle of d-bol, test., and deca a few days ago) my mood definitely becomes darker and more somber, and my temper is definitely shorter, and I find myself very aggressive, almost "looking for a fight" at times.
It is true that you must learn to control this, and for me, that means in particular those "snap--responses" to stupid unimportant things. Warbird's story cracked me up, for that is one of the things that pisses me off the most, when someone screws up in traffic, all their fault, and then they flip you off. It's really hard to let that go, but let's face it, it's really not worth getting riled about, and have some dude pull a gun out and blow you away, is it!?
THERE'S NO DOUBT that manipulating your hormones to such a great degree can cause mood changes! But the stupid phrase "roid-rage" is just some idiot journalist's name coined in the 80's to make it seem very sinister and dangerous, and thus all the stupid bullshit regulations we have to deal with courtesy of the gov't trying to tell us what we can and can't put into our bodies.