Actually, there is a good point raised in this. If the Kobayashi Maru is known to be un-winnable, why would any cadet really "face fear"? They're not going to die. Their crew is not going to die. The simulator shown in ST09 didn't even have explosions or incapacitated officers, like that in STII.
I think this is something TNG did much better: the episode with Wesley in SF Academy ("Coming of Age") gave us a much more realistic "facing fear" test.
But anyway, I suppose you must lose yourself in the moment.