I've heard the excuse before that driving or cycling fast is fun cos it feels great having that kind of control from such people. Or that they are just "owning" the road. RUBBISH. They own the road the same way as the psycho that slams into you owns the road, because they are on the road and you are in the ditch.
These guys think they are professionals because they control their bikes on the extreme edge of speed and manouverability, their control is an illusion that only lasts as long as conditions go in their favour, or if faced with other road users who are fast enough to compensate for an idiot. Throw in last minute hazard and the illusion of being in control is broken. These guys leave a wake of destruction behind them as other people compensate FOR them if they can, and hit one another if they can't. Real control and professionalism comes not from the extremes you can control your bike or car under, but the control you can exercise over your mind, in resisting such selfish highs.
Why don't they use such skills in an athletic arena? Because what they really like is the adrenelin rush of being almost out of control every second, not being in control.
Either that, or time is money, and they just don't care, I guess.