Because otherwise you cannot use your iPhone with your Macbook. It's the most senseless oversight I have seen in years. In order to turn on WiFi sync between iT

Because otherwise you cannot use your iPhone with your Macbook. It's the most senseless oversight I have seen in years. In order to turn on WiFi sync between iTunes on your Macbook and your iPhone, you need to have it plugged in at least once. You cannot plug it in though, because there is no compatible USB-C to Lightning cable from Apple. D'oh.