We don't give high social status to killers, thugs, murderers and hired assassins, but when it's institutionalized killing, (which is the military) that's okay? The fact that an "official" gives the word, and the victims are not citizens of your country doesn't make the military be less about killing.
There also is nothing "productive" about paying for salaries, equipment and training to a bunch of grown men in the anticipation that you have to send them to do violence to your bidding.
If the military was not under the veneer of "official", wrapping it in an "institution" and all the language of "serving your country", we'd not been able to distinguish between military, militia and armed thugs.
Yet, our society at large reveres them as some heroes and they are mainly socially acceptable.
I bet that if we had a "Department of pleasure", with ranks, hierarchies, rules, promotion paths, etc, sex workers wouldn't be as marginalized as they are now. In fact, in many civilized countries, prostitutions is both legal and taxed, and less stigmatized than it is in the US, who are too puritanical/religion influenced in their views to want it to be otherwise.
I disagree. First and only rule of nature is might makes right, and being capable of dishing out the most violence (and hence also least likely to be the victim of it) is very “productive”. It is a huge contributor to the purchasing power of the US dollar, which is a referendum on the stability and productivity of US society.
For example, the oceanic transportation routes around the world are kept mostly safe and humming along because of militaries enforcing it.