Would you be as likely to desire salvation from something if you did not know the horror of what it was you were seeking refuge from?  If you knew you were going to be "delivered" from a car wreck by waiting 5 seconds longer at a stop sign than you normally would, wouldn't you wait?  If we do not know what to be aware of, then how can we know it is dangerous to us?  We want to know who our villains are so that we can escape their lures - why not know what God considers our villains so that we can escape their lures?