I haven’t been following this sport much, but from what I have read, it seems that there are much more pro cyclists that use doping then everyone thinks.
If this all is true, then this would change my opinion about many things.
If these guys got away with doping for so long, then what makes you think that most of other pro cyclists are not using doping too? After all, there are some types of doping that are extra hard to find, and I too don't fully trust the doping tests. I am sure there are ways to get around it.
I wouldn't be surprised if 50% of all pro cyclists were doping users.
Any way, does anyone know of approximate performance/endurance increase in percentages of doing doping? 5%? 10%?