Is there anyone clean in cycling?

Or are there just those who don't get caught?????? I have always been one to give a cyclist the benefit of the doubt. I know they spend hours and hours training their bodies to endure unbelievable pain and endurance.
I stood by Tyler Hamilton, when he said he didn't do it and got hosed. Now Floyd may be stripped of his Tour de France win???? Today they released that he not only had a high testosterone to epitestosterone ratio but had synthetic testosterone in his system. I guess I am just another naive sole hoping that my heros are truly that, and not dopers!