I would have probably stolen cars - it would have given me the same adrenaline rush as racing.
When money and hype recede from the art world one thing I won't miss will be what curator Francesco Bonami calls the 'Eventocracy.' All this flashy 'art-fair art' and those highly produced space-eating spectacles and installations wow you for a minute until you move on to the next adrenaline event.
The satisfaction you get when you finally beat your dad is amazing that rush of adrenaline.