Reading most of the above, well what can I say. I started using Anabolic Stroids to gain weight as I started competing in boxing and always wanted to go pro as a heavyweight.....nearly got there. I have had many fights some licensed some not, some whilst using Steroids and some not. As with the agression it all comes down to the individual. I have not got any more aggressive whilst fighting using Steroids, and no more aggressive than normal, say a bit more irritabal on high doseage.....yep, high doseage!! If the dose is high then expect sides.
Acne.... yeah, few spots on the back. Most guys I train with who have been on gear for over 10 years still get a few spots..... this can be treated with the right medication.
Loosing hair..... normally genetic. If a member of your family has lost his hair then if your taking steroids the likely hood is that bit higher you will too..... winstrol being a proper shit for it.

Steroids will not turn you into some crazy loon. I spent 4 years inside, 365 days a year for 4 years with some proper loons.....none had never touched steroids, they were just fucked up from birth.

I was given advice from a mate of mine Mick Hart before I started using Steroids. Since then I have read almost every book covering the usage of them, spoken to a few top bodybuilders and train weekly with guys that use them including myself...... overated shit what many say regarding side effects. At the mo' im running a D.bol Dec course..... sides, couple of spots on my back. When I finish I will do a couple of weeks of PCT and keep some more gains. You dont keep all of the gains, Anapalon 50 being the worst, loose almost everything. My arms are just under 19" and thats without gear although Steroids got me there..... if that makes sense!! I could never get past 16.4" with my arms no matter what my diet or training.

My advice....... Look into gear with care, tons of info out there..... Mick Hart being the Anabolic Steroid Guru.....he will charge a fair bit but knows everything and helped me kindly when I got out of nick. Although im more than happy to help with advice.