I would say because most reasonable people don't believe that a sustainable economy is based off of war. More over, most people (including our politicians), do not/can not think about the world in those terms and would be appalled to have to do so.
None of this changes the idea that this was part of the neocon's economic agenda (http://www.jsonline.com/news/gen/apr03/131523.asp), in our long term economic/geopolitical plan (http://www.odci.gov/nic/special_globaltrends2010.html#middleeast) as a nation, and something planned and accepted since Kissinger was in the White House (http://www.amazon.com/exec/obidos/ASIN/1565845684/ref=pd_sxp_elt_l1/002-0108589-4031224).
Most simply there is more oil there than most places.
The short answer is becuse they are dirty bastards...
None of this changes the idea that this was part of the neocon's economic agenda (http://www.jsonline.com/news/gen/apr03/131523.asp), in our long term economic/geopolitical plan (http://www.odci.gov/nic/special_globaltrends2010.html#middleeast) as a nation, and something planned and accepted since Kissinger was in the White House (http://www.amazon.com/exec/obidos/ASIN/1565845684/ref=pd_sxp_elt_l1/002-0108589-4031224).
Most simply there is more oil there than most places.