Read this and think.
This excellent article details many of the “externalized” costs of oil production — costs that we pay through the myriad subsidies we provide to the oil companies. And one thing worth noting with this accounting: the costs of damage caused by drilling and spills in many developing countries can only be guesstimated. Standard operating procedure for oil companies working in locales far from prying journalists or vigilant authorities is to simply ignore environmental and economic damage.
Out of sight, out of mind.