War is a means, not an end. We want peace, justice, freedom, privacy, etc. If we can attain them without war, then yes. However, war is sometimes the path that gets society there.
You say you are willing to fight and if necessary kill for things you believe in. The same principle can apply with respect to war. If your nation is invaded, is grabbing a gun to defend your home, family, friends, and rights to choose your government justified? Then you have chosen war.
It is convenient and easy to say war is 'bad'. It may even feel good. But it is an oversimplification of the complex world. We should be brave enough to see society in a pragmatic way, with realism, to find the right balance and guardrails of what acts we are willing to pursue. I believe there are very few absolutes in life, 'war is bad' is not among them. I am not advocating war in general, just resolve in my position, that war is a necessary option some of the time.
PLEASE NOTE: I have all the respect in the world for your opinion. I am not trying to change it. I am simply giving my opinion and the supporting reasons why I hold my position. I give you full credit for having your viewpoint and greatly respect the fact you are willing to discuss it publicly.