I had no problem writing off pro Baseball and Football. Never was interested in any other pro sports, especially Golf (where the fans need dope). I never liked trying to keep up with all of the trivia/stats anyway so writing off cycling should free a few brain cells for other uses (sacrifice for beer).
These guys don't have a gun to their heads making them ride/dope/cheat. They're big boys (and girls), if they don't like the system no one's making them stay. They know that going in, and they make the choice anyway. They deserve every bit of scorn and suspicion that they get.