Freedom isn't free, they say; it sometimes takes money, blood, and commitment to a long hard fight.
Only a few radical pacifists would not agree with that in the abstract, and Donald Rumsfeld takes aim at a straw dog when he argues as he did yesterday. Plenty of folks have pointed out that the issue at hand is not whether we should fight for our freedom or not but whether this particular war could reasonably be called a fight for our freedom, so I'm going to point out something else.
Freedom isn't just costly in terms of the need to fight for it, it is costly in terms of the need to protect truth and debate. It is not just soldiers who protect our freedom through courage and bloodshed, politicians, media, and ordinary people protect our freedom by having the courage to speak the truth and to be respectful of differing opinions. Only when the people know the truth and can debate their opinions does a nation have a democracy worth defending.