I still subscribe to the belief that the far majority of professional athletes are taking performance enhancing drugs.
Personally I hope Armstrong didn't cheat, it's highly unlikely though. One of my favourite quotes was from Armstrong: "Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever." It helped me finish some really difficult runs.
When/if he admits he cheated, or when the proof is released, I will take that quote down off my wall and never use it again.