For me, it keeps coming back to this: I’m not convinced that anybody is clean. Are you? And do you care?
It’s easy to get frustrated by all the doping scandals and it would be nice not to care. However, if you care about sports, you need to care about doping. Keeping sports clean is necessary to protect the accomplishments of the athletes who built the sport and to protect the current athletes who are clean.
Many of those athletes who built the sport might have been doping as well.