I have read comments from Pound making the same point as Yesalis above - and yet you duck the substantive point they were making over the red herring of comment attribution, and further suggesting that the observation no longer applies today, because you think antidoping has so improved. Howman has said even this year that doping continues to be ahead of antidoping - as it always has - which reinforces the claim that it is typically still only the dumb and the careless who get caught.
You avoid the known enormous discrepancy between the number of positive tests and estimates of actual doping in sports. Clearly, few dopers are caught.
You also fail to grasp why WADA treats a series of whereabouts failures as doping violations. With three failures, "innocent" explanations don't cut it. Dopers duck tests because they can't always be sure that there isn't a test for the drugs they are taking, and they may not have a team of doctors and trainers to make sure they don't get caught.
You are apparently unaware that athletes are able to beat the biopassport, through micro-dosing or taking drugs for which there is no test. It is estimated that at any one time there are a hundred substances out there for which there is no effective test.
Doping is a more than a billion dollar industry on the black market, that frequently involves organized crime. The practice makes use of science that continues to develop. It hasn't gone backwards in twenty years. Antidoping is always trying to play catch-up. As Howman acknowledges, antidoping cannot eradicate doping; it only hopes to try to minimise it. It is a vain hope, when few are caught and the rewards for success in sports today are fame, prestige and sometimes enormous wealth.
Like many fans you cling to the quaint notion that athletes today will not avail themselves of whatever advantage they can obtain to succeed. For many, their sport is their life. If dopers are driven to succeed how do you imagine clean athletes have any less ambition, and why would they be prepared to lose to doped competitors? We gained a snapshot of that in the women's 1500 at London 2012, when it emerged that most of the final were doping. The tip of an enormous iceberg.