Oil: the energy that hurts?

Oil is the main energy source for the entire world. It makes many countries rich. But it also causes turmoil in many others. 

Qatar
-considered the 2nd richest country in the world
-oil accounts for 60% of the country's GDP
-country has free health care for all
-capital expected to keep growing
Source: Gale Opposing Viewpoints Other Rising Middle East Nations in the Twentieth Century and Global Issues in Context Qatar

Iraq
-oil production jumped 20% in this year alone
-threat to the shaky democracy
-filled with corruption and greed
-disagreements on oil-production and revenue sharing
Source: Gale Opposing Viewpoints  Iraqi Oil a Double-Edged Sword

You could take examples from the Persian Gulf monarchies or Saudi Arabia who all benefit from their oil or you could look at Venezuela, Nigeria, and Russia, all who were harmed by their abundant oil.
The real question is does having oil make you better off in the end? 

Taken from: http://topics.nytimes.com/top/news/business/energy-environment/oil-petroleum-and-gasoline/index.html and http://en.wikipedia.org/wiki/Oil_platform