You've stated no facts. So, let me help you.
As President, Eisenhower understood that the world's economy runs on oil. He approved the CIA/British operation known as "Ajax" to procede -- overthrowing the government of Iran and installing the Shaw upon the Peacock throne.
Reagan too, understood the economics and assigned the U.S. Navy to escort the reflagged foreign oil tankers through the region during the Iran/Iraq war.
The fear in Washington was (when Saddam invaded Kuwait) that he would not stop there, that he was going for Saudi Arabia, the UAE, Qatar and not stopping until he got to Oman. The fear was that historically, the UN was ineffective and would do nothing. So, the U.S. mounted a coalition of force.
The first gulf war (Desert Storm) ended when Saddam agreed to a cease-fire with numerous sanctions.
Saddam refused to abide by those sanctions and refused to allow weapons inspections to take place. The first chief weapons inspector resigned in total disgust when he got no support from either the U.S. (Bill Clinton) or the UN.
The current war is little more than a continuation of that first war.
The cost of some 4,080 lives over a period of what? six or seven years at war is actually incredibly low. Gen. Patton in the last six months of 1944, lost on average 1,300 men every three weeks.
Both the President of Iran and the leader of al Qaida in Iraq commended the people of the U.S. (on November 8th, 2006 -- the day after the congressional elections) for having elected the Democrats -- sorry folks, that one was reported repeatedly on CNNs Headline News.
The President of Iran has stated that Iran is "ready to fill the vacuum of power (in Iraq) when the U.S. leaves.
Iran has mismanaged their oil production capabilities. They sit atop the world's third largest known oild deposit and yet, they have to import rather than export oil! They've not reinvested the profits at the pumps back into research and developement. Currently, Iranians are paying on average 38 cents per gallon at the pumps. Irans wells are now all over 50 years old and in a rate of decline in production by 13%. Their laws and policies are extremely prohibitive when it comes to allowing foreign companies to come in and get the oil out of the grown, currently the only ones willing to meet their standards are the Italians. Should the U.S. pull out prematurely (before having secured the border with Iran), the Iranians will most suredly step in and take charge, thus taking control of the world's oil supply -- and remember folks, Iran supports terrorism. Just from the greed of the oil companies here, we've already witnessed an increase in the cost of everything -- you're now paying three times as much for groceries as you were just two months ago. Can you just imagine what you will be paying should Iran (who is very much anti-American) should be allowed to control the flow of oil?
For those who complain about a "loss of freedoms," understand that FDR had far more power than does Bush. He was allowed wire taps and spying on Americans without benefit of a search warrant -- that's how they got Al capone! FDR incarcarated some 1,200 Americans without due process of law for four years (Japanese-American "Internment Camps")!
It was Bush Sr. who started the military draw-downs (planned even before Desert Storm), but it was Bill Clinton who finished them. He had no idea what he was doing. He used the FDR "New Deal" strategy/excuse -- "the economy's in a slump, we'll never again be in a two front war" (Adm. Nader -- a chief Architect of Clinton's draw down -- justifying to me the reason for the draw down) and we REALLY don't need this large a military. They're a drain on our economy. Perhaps if Bill weren't so busy with an intern, he'd have done the right thing and we wouldn't be in a two front war now.
There's plenty more, but this should REALLY be enough. Good luck!