It's always the wannabes who're more susceptible to the temptation of short-cuts to success. One only has to look at weight-lifting or body building.
Bodybuilding such as Mr Olympia (Ronnie Coleman etc) allows juicing, well not so much allows (because of legal implications), but doesnt really care nor does anything about it, turns a blind eye if you will, it is accepted, Arnie used to take Dianobol daily like vitamin pills. If you want to find a clean bodybuilder, refer to "natural" bodybuilding competitions
Not sure about weight lifting competitions stance on steriods, my girlfriend's brother is a sponsored athlete and a UK and World Power lifting Champion with World Records to his name, he is clean, but I wonder how often he gets drug tested, probably fairly often I'd imagine!