All the Olympic sprinters and their designer doping kits.
That Hans Ritter UN weapons inspector chap who just got busted trying to seduce what he thought was a kid.
Why do they do it? What makes them think they're going to get away with it?
Ego is obviously one reason. (Because I can.)
That at least accounts for the first skank, the first steroid injection, the first - um - inappropriate internet contact with a minor.
But why keep doing it (whatever it is)? Why not quit the cheating (or whatever) once you've tried it and satisfied the curiosity?
Perhaps the answer lies in Mr Ritter's back history. This is not the first time he's been found trying to arrange sex dates with minors, it seems. In fact, he's been at this crack for years.
He's no moron. He almost-singlehandedly took on the Bush Administration at one point. So what made him think he could possibly get away with continually behaving like he has?
Probably the same reason that made Ben Johnson and the other sprinters keep taking the 'roids, even though they have to undergo regular and unannounced drug tests.
The same reason Tiger kept chasing hoochie-mama skirt even though there was a press pack never far away.
Because they got away with it once, that first ego-driven, curiosity-spiked time. But they don't think 'God, I was lucky to get away with that. Better not risk it in future, since I've so much else to lose.'
These people believe they are so intelligent, so smart, and so powerful that they will NEVER be caught. Having got away with it once, they are almost compelled to repeat, because they genuinely believe they won't be caught.
Which makes them get sloppy, which gets them caught.
And that, ladies and gentlemen, is how karma functions in its most overt form. What the ego drives us to do, the ego ensures we make amends for.