Because i don't mind the damage it can cause? I won't listen to you because ive known people who have cycled at 17 even 16 years old. today they are 30+ years old retired bodybuilders and their hormones are fine. I prefer rely on real evidence from people i know than on your theoretical explanations about the human endocrine system not being developped till 25 thingy URL you keep posting on everyone's thread.
You call immature someone who doesn't want to do exactly as you say?
Now i want to know if i can expect skeletal growth with 6 UIs of GH ED. i got a skeletal scan and my growth plates are still slightly open.