Bro's,
The cold hard reality about steroid use at least as it pertains to most of us, is that it allows us to achieve physiques that otherwise would be unattainable when you factor in the demands of our everyday lives.
If you just take a moment and think about your own lives, the things that you have to do every day that don't involve working out or eating right. These demands are ever present and are constantly competing for the attention that we would otherwise like to give to our workout endeavors. Pro bodybuilders do this for a living with most of their day being focused on the development of their physique. However, for most of us, we don't have this luxury and are constantly having to make choices between working out and eating right and dealing with everyday life.
Using myself as an example, steroids afford me the luxury of dealing with everyday life and still developing a respectable physique. Steroids do this by streamlining the process in which one must go through to sculpt their physique, thus effectively reducing the amount of time and energy required. I need to make one thing clear though you still have to work out hard in the gym and eat right but with steroids the return on the time invested will be much greater.
This leads me to the point about genetic potential. Following the argument I just put forth, genetic potential becomes more of an academic debate rather than a reality that we can apply to our own lives.