From what I understood a large part of cycling's doping problem was driven mostly by the culture encompassing the sport that made it just as acceptable for a cyclist to take drugs as to have a simple drink. How was that atmosphere created ? UCI wanting $$$, journalists riding the gravy train, media downplaying and not investigating doping issues and importantly fans that don't give a crap if their rider was on the juice.
The atmosphere of any environment implicitly impacts the social conduct of anyone in it. Place the exact same person into a situation with a negative atmosphere (over a positive one) and they perform worse/care less - there's been many psychology studies confirming this. I remember reading in Tyler Hamilton's book he said (most of) his fellow dopers were not morally bad people, they were "victims" of the times.
Like I said in my first paragraph fans have a part to play in this too, you can see in sports like american football, soccer, hockey (etc) where fans could not care one damn bit whether their team is using and that encourages the athletes in the wrong direction by cheering them on.
You could say what difference does one person watching a cycle race on TV sitting in their living room make though by backing dopers (or clean riders) ? It's a fair point and similar to say voting in a big government election where one vote never ever makes the difference, so why would you actually vote if your vote essentially doesn't count, why does anyone? I guess because it does make a difference, you don't how many people you can influence just by talking with friends, posting on forums etc
If you care about cycling I don't think it's right to encourage dopers in
any way. It's part of the problem, albeit a very very very small part, but a part nonetheless.
Anyways that's why I think you shouldn't root for some dopers