My uncle Pete Flynn was gassed in WWI. I had other relatives in WWII. My brother was a Green Beret in Viet Nam. Although the US leaders say they are thinking of the consequences, I still am not convinced they are, and I think many who rememeber what war is like are not convinced.
Many from the last Iraq war are still waiting to be treated right by their government.

This is a statement from VETERANS AGAINST THE IRAQ WAR
http://www.vaiw.org/vet/index.php

Veterans Against The Iraq War is a coalition of American veterans who oppose war with Iraq.

                              Until and unless the current U.S. Administration provides evidence which clearly demonstrates that Iraq or any
                              other nation poses a clear, immediate danger to our country, we oppose all of the Administration's
                              pre-emptive and unilateral military and diplomatic activities geared towards provoking or initiating a military
                              conflict with Iraq. Furthermore, we cannot support any war that is initiated without a formal Declaration of War
                              by Congress, as our Constitution requires.

                              Although we detest the dictatorial policies of Saddam Hussein and sympathize with the tragic plight of the Iraqi
                              people, we oppose unilateral and pre-emptive U.S. military intervention on the grounds that it would establish
                              a dangerous precedent in the conduct of international affairs, that it could easily lead to an increase of violent
                              regional instability and the spread of a much wider conflict, that it would place needless and unacceptable
                              financial burdens on the American people, that it would further divert us from addressing critical domestic
                              priorities, and that it would distract us from our stated goal of destroying international terrorists and their lairs.

                              Furthermore, Veterans Against The Iraq War does not believe the American military can or should be used as
                              the police-force of the world by any Administration, Republican or Democrat. Consequently, we believe that
                              the lives and well-being of our nation's soldiers, sailors, airmen and marines should not be squandered or
                              sacrificed for causes other than the direct defense of our people and our nation.

                              Finally, we believe that a pre-emptive and unilateral US military attack on Iraq would be illegal, unnecessary,
                              counterproductive and present a truly dire threat to our vital international interests and basic national security.
                              As military veterans, we have a unique understanding of war and know the many hidden truths that lie behind
                              easy theories and promises, as well as behind the tragic consequences that even victory brings. We therefore
                              call on all like-minded American veterans to join and support VAIW in its efforts to avert a national tragedy
                              and an international calamity before it begins.