If you follow professional sports and get hung up on who uses/doesn't use PED, I think you're in for many letdowns.
[Spoken as a former follower of track/field and cycling . I strongly believe that PED use is widespread, especially in NFL and MLB, though the Olympic Games take sport chemistry to its highest level. I chuckle when anyone from the NFL or MLB gets nailed for doping - they must be real dumbasses given the "nod, wink" testing regimens.]