Well, I can only speak for myself here.
I was in the military a few years ago, and my brother still is, for now... he's also been out to Iraq.
My own view is that, while I agree that being a pacifist doesn't stop you getting attacked by those who aren't, that there's a big difference, in terms of motivation and morality, between a reactive war and a proactive war.
I think that a reactive stance, waiting for someone to actually do something, is more morally justifiable than a proactive stance, taking out everything and everyone that could theoretically pose a risk at some point in the future.
I know this isn't about politics, but to illustrate my view, just look at the initial support for the campaign against the Taliban in Afghanistan by the global community as opposed to the lack of support for the campaign against Saddam Hussein and his percieved weapons of mass destruction. One was reactive, and, it could be argued, justified... while the other was proactive, a threat that
could exist at some point, and needed to be dealt with before anything 'bad' happened.
In an ideal world, war would be unnecessary, and there would be no need for protection. But this isn't an ideal world. And as such, conflict is largely inevitable, possibly due to the desire by some for power at any cost, and partly, I suspect, because of an inbuilt evolutionary instinct to display the notion that 'might is right', and the person/group/nation with the most strength gets to call the shots.
The thing I've noticed, though, particularly in my little corner of the world, is that a lot of people, particularly younger people, don't join the military out of a desire to fight for an ideal. They join because they get paid well, they join because it offers them a way out of poverty, they join because they believe they'll be respected within society, get to travel and see the world. What they don't consider is that the world they'll get to see is one so totally different from the one they picture. And as a result they are mentally unprepared for what they have to face.
I respect your view, Chris, and it's one that my brother shares. I asked him once why he joined, and he said simply "Because the people in those towers could have been my family. I want to stop it happening to anyone else."
But I do believe there's a difference between fighting to preserve your way of life and freedoms, and fighting to force other parts of the world to share your way of life and your freedoms, whether they want it or not. It's one thing to remove a threat because they wronged you and could do so again, but another to remove a threat by making them become like you.
I don't think war, in itself, is wrong. War is neutral. The people who declare wars, the policy makers... they can be wrong, and often are. The people who fight wars... they follow orders.
As I said at the start, that's just my philosophy.