I answer on instinct: there is nothing I find less trustworthy than someone who presents themselves as the essence of trustworthiness. I like people who admit up-front that, if they can tilt the pinball machine without the machine registering their tilt, then yes, they will tilt the odds in their favor. (Of course I am assuming an "opportunity to tilt undetected" that has no chance of causing harm to others.) But if you can't say honestly that you would take a (useful) gain while causing no harm to others, then I somehow feel more inclined to think you're a cheat who feels willing to cause that harm, given enough incentive, but you just don't want me to think you are because that reduces your chances of success at cheating later without my noticing.