Forget supply/demand. Forget speculators.
High oil prices serve to bolster the US economy.
If this article doesn't put all the jigsaw pieces together in the whole puzzle, you're not very switched on. The world is again propping up the US economy by accumulating US dollars in order to purchase oil... but that could change.
http://www.energybulletin.net/node/12125
Note: The article might be a couple of years old but it's quite factual... and the author foresees events that will likely explain the current motives of the Bush administration. It reads like a predictable game of chess.
The article is reason enough why oil prices will not fall in the next few years... unless the Euro becomes the prominent currency for purchasing oil... and this could be extremely plausible.