Why should soldiers die?

The following is a part of the letter that Cindy Sheehan, the mother of the 24-year old soldier, Casey Austin Sheehan who was killed in Iraq last year, has written to Truthout's William Pitt. Cindy Sheehan is the co-founder of Gold Star Families for Peace.
I think this letter shows that despite the attempts of American nationalism to limit women to subject positions of patriotic mother and wife, many women in the U.S. are actively participating in anti-war political activism that puts the myth of "one nation united against terror" in crisis.
The link is from truthout.org.

"And, most importantly and devastatingly, this war is based on lies and betrayals. Not one American soldier, nor one Iraqi should have been killed. Common sense would dictate that not one more person should be killed for lies. One of the people, my son, was more than enough for me and my family. I will live in unbearable pain until I die. First of all, because my first born was killed violently, and second of all, because he was killed for a neo-con agenda that only benefits a very chosen few in this world. This agenda and their war machine will chew up and spit out as many of our children as they can unless we stop them now...
In 1967 it was recognized by our government officials that Viet Nam was unwinnable...I don't even know how many more of our troops and innocent Vietnamese were killed before we finally pulled out in 1975. Please use your forum to expose the lies and the devastation this invasion/occupation is causing. We should not stay. We should not let Israel/USA invade Syria or Iran. The consequences of this would be too shocking to even contemplate.In addition, my family and my group are offended by hearing this administration say that our troops have to remain in Iraq and complete "the mission" to honor our loved one's sacrifices. First of all, no one can explain the mission to us and we don't want any more innocent blood spilled just because it is too late for our soldiers and our families."