The unauthorized use of anabolic steroids is wrong only b/c of a law prohibiting said use. Absent such a law, it's a morally indifferent act. It's not like abusing a child. We don't need a law to tell us that's wrong. Child abuse is evil in and of itself. Obviously, there's no moral turpitude involved with A.A.S. use.
There was a big hue and cry in the media about steroid use at the 1988 Olympics in general and by Ben Johnson, the notorious runner, in particular. Books like "A Death In The Locker Room", anti-steroid "After School Specials", former gear using athletes getting up on their soap boxes bashing gear, the I.O.C. and U.S.O.C. demonizing a.a.s. in the wake of the Johnson debacle, and the media blitz that followed it, etc, was too much for the politicians to take. Many of them were clamoring for the media spotlight as champions of the anti-steroid movement. It was political opportunism plain and simple. The Anabolic Steroid Control Act was snuck into the Omnibus Crime Control Bill of 1989 that was signed by president Bush, and the rest, as they say, is history. I don't know if the President was all that enthused about the the A.S.C.A., but their were things in that crime bill that he very much wanted. Remember, there was no line item veto back then. As President, he couldn't strike out any part of the bill without vetoing the whole bill. And he wasn't going to sacrifice that whole bill just to keep a.a.s. from becoming controlled substances.
Politics, ain't it a bitch?