To summarize, you think it’s okay for the gov to subsidize people’s children so that they have an unspecified claim on them up to sending them to a violent death. Very humane business, having a monopoly on violence.
I guess we'll see the abolition of animals farming globally around the same time. This would be the expression of humanity's "sentiment" against coercion towards the weaker in general. I believe this may happen but not very soon. (I am myself a meat eater.)
What would happen if the USA and PRC China got into a hot war over the ROC Taiwan? That would destroy the economy. Much easier to just insult one another and play games with currency manipulation and tariffs.
Capitalism and the global markets interconnectedness will save us from going to war.
Who is this ‘WE’ to whom you refer?
War is immensely profitable to many companies and individuals.
When those interests have the reins of power, there will be war.