There have been some interesting points here but from my own experience I have never cheated but I have been disqualified from more than several races. It depends on the reason- not all DQs are alike. I wish mine hadn't happened, but it wasn't a big deal & there is no shame. My DQs involved making wrong turns, leaving the course to take a dump and actually one time was DQd along with dozens of others who all made the same wrong turn.