Seriously, most moral philosophies are against cheating, stealing, murdering, etc. I think it's safe to guess that there would be more cheating, stealing, and murdering in the world if everyone became absolutely convinced that none of these moral philosophies are valid. But of course nobody wants to publicly admit that they'd personally do more cheating, stealing, and murdering. So everyone is just responding with variants of "Of course I wouldn't do anything different. No sir, not me!"

Except apparently Shane Legg, who doesn't seem to mind the world knowing that he's just waiting for any excuse to start cheating, stealing, and murdering. :)