Our technologies become more complex while we become more simple. They learn about us while we come to know less and less about them. No one person can understand everything going on in an iPhone, much less pervasive systems.
Files on iTunes - and thus iPods - are incompatible with everything else. Applications on iPhones may only be sold and uploaded through the iPhone store - giving Apple control over everything people put on to the devices they thought they owned.
It feels as if ever since the iPhone was released, the Macintosh computer has become just another leverage point in this other operating system's marketing plan.