No one wants to see any Americans die in war.
But we know it can happen; and it's fair to examine those who have claimed that casualties in a war are too high and excessive. (most agree that sometimes, in a just cause or when our national security is threatened, casualties can be justified. The question is when this is.) Take Iraq for example: "More active members of the military died during two years of peacetime in the early 1980s than died during a two-year period of war in Iraq and Afghanistan, according to a government report. The Congressional Research Service, which compiled war casualty statistics from the Revolutionary War to present day conflicts, reported that 4,699 members of the U.S. military died in 1981 and '82 — a period when the U.S. had only limited troop deployments to conflicts in the Mideast. That number of deaths is nearly 900 more than the 3,800 deaths during 2005 and '06, when the U.S. was fully committed to large-scale military operations in Iraq and Afghanistan."
That puts the war, and the losses we've suffered in it, into more context.
You'd never know the above from reading some of the hysterical media coverage of it.