Looking at it from the wrong angle. Someone would have to invariably experience it, if it were to happen. You just happen to be amongst the group, possibly. It is highly likely that a species that evolves to develop a certain level of cognitive ability would develop tools which would eventually lead to automation and possible replacement of its biological form. It is either that or extinction through some eventual cataclysm. Intelligence is the only thing which can give a species a fighting chance to avoid all eventualities in the universe. It's either action through intelligent choices, or random luck.