I share your same sentiment. This is precisely in my mind why Doping is such a let-down to the fans.
As much as I'd like to celebrate great performances, the cold hard facts are that Track & Field has a history of doping scandals. There is a spectre of suspicion and uncertainty that hangs over the sport--and some of this is unavoidable and reasonable. The Dopers ruin it for everybody, in the sense that fans and athletes can't ever be 100% sure what sporting greatness they should wholeheartedly celebrate as a triumph of human will and discipline versus which performances might be attributable to doping.
Make no mistake, all elites will have to put in intense training schedules to achieve success, with or without PED use.
But the clean athlete is the most inspiring because, like Alberto Salazar said in his rebuttal of recent accusations, the clean and winning athlete demonstrates that the sky is the limit, and by really covering all your bases, there is a higher, transcendent plane of achievement possible.
Or, something like that. I don't think Mo Farah, personally, is doping, but if years from now--just a hypothetical example to try to relate to what I'm saying--if years from now he is confirmed to have dope, then I will be greatly disappointed, as might others, because it seemed that all that beauty and inspiring triumph was less about all the great sacrifices and things he did in the NOP programme and more about the PEDs.
In fact, it might be the most disappointing.
I have not done exhaustive research to try and find out all the training secrets and biographies of the distance running greats of history, but Mo Farah's regimen and certain details of the NOP seem to be more visible than, say, El Guerrouj's lifestyle back in the day. That may just be a contemporary bias, or effective marketing by Nike, effective media promotion and visibility, or whatever, but that's how I feel.
When athletes take PEDs, it obscures the contribution of many other factors to athletic success.
Most of us lay Joes or even semi serious athletes will never ascend to the elite ranks of performance, will never live that life and push the limits and explore the possibilities for ourselves.
But some of us still believe in the power of doing as much stuff as we can right in our living and lifestyle towards health and training. At the very limits of human endeavour, when we as a society could learn a great deal about the contribution of many variables in running excellence, among other insights, the spectre of PED use (and any confirmed reports) make a mockery of our hopes and quest for betterment and knowledge.
I didn't even really feel this way about PEDs until recently. Of course, I don't and didn't approve of PEDs, but, aside from unsafe health and scientific aspects of PED use, as well as the immorality of cheating other fair-playing athletes and blatantly violating the groundrules of sport, still, I was as categorically opposed to PEDs as most were. I even didn't fully understand people like Renato Canova who said that the worst thing about PEDs is "cheating yourself."
That is, until I put my views about lifestyle and human potentiation together with the spectre of PEDs.
But I am still divided about the issue, though, especially in the grey area of PEDs. EPO and related PED regimens and even some crazier, more out-there (out on the frontier of technology, like "gene" doping, which I don't know much about but have read about) seem to be clearly excessive and transgressive to me, but I am, particularly, divided about the grey area including supplements that try to boost physiology to "legal" limits (highest allowable testosterone) and Lord-knows what NOP might be doing. Is this in the same class of permissible performance enhancement as Altitude training or Altitude living? Is there any situation in which rather extreme performance enhancement could be construed as, in any measure, admirable, in terms of pushing human limits? I don't know the answers to those questions.