In all seriousness, we were fighting for out national interest. That means control of the oil so our population can continue to indulge as energy hogs.
I’m not so sure. I think the goal is to prevent the emergence of a rival superpower (China or the European Union) by controlling the supply of oil. Oil is the lifeblood of any modern military, and if China or the EU have all the oil they want, they might be able to surpass the US as the world’s pre-eminent power. By controlling the oil, we control China and the EU (or so the PNAC theory goes).