I am mid 40's in age. I ran an 800m sub 1:45. My 1500 was comparable. My competitive years were late 90's mostly.
Doping was an is what we did. No pressure, and no qualms (I think that is the word?) about it. I never felt guilty, nor trapped.
Ethics? Either everybody is allowed to dope, or be firm on it. Don't let the Usain Bolt's of the world get away with it, and then enforce it elsewhere. Either all in, or all out. But stop the facade and the cherry-picking of who gets caught and who does not.
At that time, beating the tests was rather easy.
To be honest, it helps, but the fast people are fast anyway. I doubt there are too many people on my continent, at my age, who can beat me in a 400m, 800m, or 1500m. I do not dope now. I take legal supplements and weigh 15 pounds more now than I did then, albeit all muscle. The real issue wasn't the doping, it was the staying as slim as possible. We would do things to lose muscle (in my example) as weight is bad..including muscular weight. I'm far more muscular naturally than most runners (more like a 200m/400m build) so getting light for the 800m was problematic. Clenbuterol and other aids are used to speed up the metabolism. These were far worse than the performance enhancer aspects.
Apologies as English is not my native tongue, and therefore a deviate between over-formality and egregious grammatical errors.