Killed by lighting?
As it's probably the only device left that connects by the old 30 pin erm, connector.
But it is a pain, mine is nearly but not quite full of legal (lossless) music. Yes I can tell the difference, depending on what it's connected to.
The other pain is the convenience of car use. As a lot of manufacturers have a love in with Apple, you may not be lucky enough to fill a USB stick/SD card with lossless files as support over various manufacturers is patchy.