
I sort of understand that multitasking is not as important as on the pc, but it is very handy when you are in the train. Open up the special train schedule app, while the GPS fixes your location you have just enough time to navigate to u2start. Instead of waiting before loading is finished you can go back to the schedule.
This all while you've paused your favourite tv show in the media player.
But it is a battery killer if you forget to close the apps while the phone is in your pocket.