So this has two sides, the competetive and the social. On the social side what happens goes along these lines-

Little Johnny is a good baseball player in Tee Ball, but as he gets a little older and moves up into competitive ranks, he is just one of many, and maybe even mediocre. Sooo he takes a little juice to make him stronger or faster or whatever. And as he goes along he takes more and more of it, CHOOSING to ignore the health side effects. And then one day his leg breaks because the drugs have weakened his bones, or he has a heart attack , or some form of embollism, requiring a lot of hospitalization his health insurance has to pay for. So the insurance company makes a policy that they will not cover steriod abuse related illness or injuries. Well now the taxpayers have to pay for Johnnys continued medical needs.
OOOOO no one likes that. Why, if those bad bad drugs were illegal then golly the abuse wouldnt happen, and it would give the insurance companies a bigger out, and we can then arrest people for steriod possesion, because everyone knows spending a 100K a year to keep an abuser locked up is much better than paying for medical bills.


On the competitive side, other competitors do not like the thought that its the drugs and not just hard work or natural ability beating them. It comes down to a moral choice that they do not want to be beaten because they chose not to take drugs.

IMHO I dont care if they are legal and some chumps want to dope up and hit the wieghts, but I would have an issue with them in professional sports.