You do realize how many cyclist before, during, and after his career ended have tested positive for banned substances. For the most part, no one cares about them, because they didn't win or weren't as successful as Armstrong. It's a rampant problem in cycling, and people are using Armstrong as a scapegoat. They are putting all the blame on him, because he was the most successful cyclist.
I still don't see any reason why I should hate him for it.