You know, there are a lot of people alive today, who lived on to have wives and families, because some buddy in combat stuck his neck out and maybe lost his own life so his fellow soldiers could live. That happens a LOT, because that's the flip side of the human nature that you failed to mention when you talked about the psychopaths who start wars. Nobody is charging a machine gun emplacement because he worships the United States; he's doing it because his and his friends' lives may very well depend on that sacrifice. You can deride them as "patriotic monkeys", or dispute whether or not they can be called heroes, but they are most decidedly not "victims of war". If you were in Grenada, or Panama, or Iraq, or Afghanistan, you weren't there against your will; you volunteered. You're going to have a hard time finding a Soldier or Marine or Sailor or Airman who ever considered themselves a "victim" if they were injured in combat; they'll tell you they were a soldier who got wounded. And I won't dispute that you could probably find a parent or wife that hates the military because their loved one was killed, but because I was in the military and maybe know more about it than someone who wasn't, I can tell you that a lot more families, though they mourn the loss of their loved one, know that he or she was doing something they felt was important, or needed doing. And in a sense you're right; that bit of metal they pin on your chest is worthless. A couple bucks worth of pot metal and fabric. And even what the medal symbolized might be worthless to the soldier who earned it, because you'll find that most guys who win medals for bravery didn't give a damn about the medal, or the recognition, or the United States, or the US Army, while they were earning it; they sure as hell gave a damn about those guys who may have been pinned down by hostile fire, or who flew a dustoff into an area under heavy fire to rescue the wounded. They didn't do those things for medals, or praise, or the love of Uncle Sam; they did it for their fellow soldiers. You can deride those guys all you want as patriotic monkeys, or tools of Imperialism, but those guys absolutely embody the characteristics that you seem to think they lack; compassion for their fellow man. If you don't think that it takes a Herculean amount of compassion to crawl into an area where you know you have a good chance of being killed just so you can rescue your buddy, then I don't think you even know what compassion means.
If there was some magic wand you could wave to simultaneously change the human nature of every person on this planet, you might be able to do away with armies, and the people who fill them, and everybody could follow the "ain't gonna study war no more" philosophy. Well, humans have been around now for about thirty thousand years, and we haven't managed that feat yet, and any civilization that hasn't been willing to fight has been swallowed up by another one that was. You can absolutely dispute the reasons for a war, or the justifications for it, or the righteousness of it, but don't denigrate the people who put boots on the ground to fight that war as some sort of puppet of the government. I don't speak for all vets, but I went in for my own reasons, none of which had anything to do with being brainwashed.