I didn't want to go into too much detail but now I feel there is no choice here

There was a lot that was correct in your post and some that was incorrect -- so i feel that we can benefit from seeing what was true and what was not.
NOTE: This is written with a MALE target audience in mind. Most females here wouldn't even consider anabolic hormones so I won't really touch on that.
Can give cancer
True. Anything that promotes growth has a higher incidence of causing cancer.
it will make your winky smaller.
Kind of true but not really. Most people notice a decrease in testicle size but an increase in penis size.
Your testicles go through more than just "shrinkage" though. The cells in your testicles see that they don't need to produce as much testosterone, in most cases, depending on the hormone. This causes them to have problems developing sex hormones in the future which can lead to impotence and the infamous "bitch tits" (as they are called in Fight Club) due to hormonal imbalances that occur after one stops using these drugs.
That and you will only be strong for a short-while. If you do it through hard-work, you will be able to stay stronger for longer. What my coaches tell me at any rate.
Worded badly. Somewhat true or totally untrue depending on how you read it.
You will only have the increased mass for a period of time after use. This is because your body cannot stimulate the muscles in the way the drugs can to maintain/increase the size that is attained with these drugs. The muscle mass goes back down to a more normal level. Strength is related to muscle mass, but the main component is really neurological adaptation (in other words, your body learns how to use its parts properly to be strong). Most strength can be gained/maintained despite drug use. The increased muscle mass, however, does help to give athletes a competitive edge.
The reason why they are unethical is because when people start doing them they are taking unnecessary risks which everyone else doesn’t really want to take part of. In some sports it is almost to the point now where you have to do drugs to play at the top level.
I agree with you here -- sadly, I am convinced it is *all* sports...especially those on a global scale with a heavy strength component (like olympic weightlifting...)
This is just another reason to be a recreational competitive athlete and avoid pro sports -- become a doctor who can clean 300# -- not a juicer who can clean #500. One is smart and strong. The other is stupid and strong.
BTW, getting good drugs is hard and expensive and the likelihood is he doesn’t have 10,000 dollars to buy it from a doctor.
There are some cases where your doctor would give you shots of hormones like Human Growth Hormone or Testosterone. Usually this is because of a physiological problem that inhibits your body from making these on your own. In these cases, it is covered by insurance. Any doctor who gives it to you just because you want it is a criminal.
Good stuff isn't hard to find, either. Just go to a bodybuilding gym and make friends. If you train seriously enough for long enough you will be able to find out who uses juice and how to get it...this is why there is such a problem in high schools these days with kids juicing well before their bodies finish developing

The cheap stuff always has aids. I don’t know this personally; I just read it and heard it from others.
You can only get AIDS from shared needles. If you have sterilized needles, there is no risk of getting AIDS.
Typically, the drugs purchased for use in the USA are from veterinary sources. You can get these without a Rx if you order them properly...this is what most people use here since animal and human hormones are very similar.
Don't share needles at any time in your life - for any reason - ever.
Just a side note with parkour, a lot of it is skill so steroids won’t help as much. It may make you stronger, support your own body weight, push more pounds, and jump a little higher, but it won’t give you the parkour smarts, which is a lot of it. The strength is really a vice which can be obtained by almost anyone with decent shape. Technique has more to do with it.
Technique is huge, I agree.
Strength is just as important though, i wouldn't consider it a "vice".
