Sitting in one’s comfy chair posting about such big things is easy.
Those who actually went to war and got their butts shot off have a different opinion. My grandad is in that group having been severely wounded at Paschendaele 100 years ago last November 30. He would tell you a thing or two about warfare.
As was already pointed out, war is about financial greed. There are a few rich oligarchs running Earth and they initiate wars to get richer. They use soldiers like pawns. Nothing more.
The vets who returned from Nam have a voice, and their voice is more credible than someone who has experienced nothing.
For every “patriot” on this side, there is a “patriot” on the other side coming to patriotically kill your family the same way. Aren’t we glad that guy isn’t a coward.