Maybe it's time to just let them all use whatever junk they want. May the best genetic engineering win
That's how it used to be. Charly Gaul is a legendary rider, won a couple of Giros and Tours, and he was one who would dare to put anything in his body to win. Fausto Coppi is known to have used amphetamine. This was common practice and wasn't prohibited. Jokes were made on TV and in media about using pills to win races. Riders would end up dead or collapse due to certain drugs they were using.
There are reasons why anti-doping actually took off in the 60's. Not that it helped a great lot, people were still doping left and right and still are.
I predict that class of sports, which solely relies on plain body output, will more and more be marred by this stuff.
Not just endurance sports mind you. In the Operacion Puerto case, a lot of athletes were implied - including boxers, tennis players, football, etc.
Tennis has a problem too, and the testing regimes are ridiculous. Wouldn't be surprised to see major storms happening in the tennis world soon enough, the finesse and technique isn't as prevalent as it was before and now it's more about strength.
And when an NFL player had apparently given a non-human urine sample, he was suspended... for a whopping NINE games (CMIIW). Wow, what's that, three months? I'd say the anti-doping regimes in cycling are MUCH tougher than in ANY other sport, but even that isn't enough.