Perhaps you were going to say that with very well-recorded and well-mastered material, a stereo presentation can give you a great sense of left, right, forward, and backward -- sound can seem to emanate from well outside the physical dimensions of the speakers or even the room. I've got a stereo CD that seems to completely erase the walls in my small 12'ish x 12'ish room.

Surround sound is just an easier, dare I say lazier?, way of achieving those effects -- which is not to say it doesn't have any merits especially when taking home theater into consideration.