Not me. I don't plan on ever competing professionally or whatever, I do it for recreation and as a sort of stress release, so I really don't see why I should get my hands on performance enhancing drugs. I'm pretty sure a lot of would-be professional racers do it apparently, but for me, who just wants to enjoy the fresh air while surfing through the streets while the sun goes down, I have no reason to use them, and I am perfectly happy with the pace I am going day in and day out.