Yes i can see the point in legalization.

Althought the next two problems you have is the out cry when athletes start dying of a young age because of liver, heart and other organ failure.

Other unknown side effects

Sport will then be dropped to a level of whoever can afford the most potent roids wins, OR who's body can take the most chemicals without dying wins. It becaomes less about the actual sport.

Then you have the problem of young kids taking steroids to emmulate their heros...