After reading the Cataclysm Holy Paladin discussions... the mechanics of DI appeared in my head.
"Divine Intervention - The paladin sacrifices himself or herself to remove the targeted party member from harm's way. Enemies will stop attacking the protected party member, who will be immune to all harmful attacks but will not be able to take any action for 3 min."
We all know what pallies use DI for: Primarily to save yourself repair costs during a wipe, and secondarily to save someone else repair costs during a wipe. Occasionally for faster raid recovery (it's getting more so that running back in is usually as fast or faster).
Obviously that doesn't really sound right; kinda like saying: Believe in the Light and save some munnies!
What was the intent of Divine Intervention in the first place?
To save a paladin and his chosen target some gold?
A raid recovery tool from times past where people had to spend a long time running back?
So far, it seems that DI is an extremely rare skill that you use when the raid is guaranteed a wipe. It is an "ohshit" button in the sense that: "ohshit wipe incoming time to save some gold". It has no real combat benefit, and even when some paladins creatively used it to remove Saurfang's Mark in ICC, Blizzard has made known that DI was not intended to be used in such a fashion.
My point of discussion: Do any pallies here use DI for any other purposes? What do you think DI's purpose is, should be, or can be?