The military and their exploits create lots of wonderful jobs. Better still, they also produce lots of body bags full of heroes, those who admire the concept enough to become the martyrs ("Hail the hero, give the bag a medal, build a monument"). Leave them to it and the logical conclusion is that there will be no more wars through a shortage of people - at least until more have been bread and "trained" and then it can be started all over again. Glory, glory and thank you, brave schemers.
Hold on, are the modern replacement jobs a viable idea - the ones created by non-destructive industries/ideas including the HUGE employment machine which is regulations needing monitors, enforcers, fee collectors and record keepers (easy money). What about all those working one way or other to make a better life for others ? Trouble is though, absolutely no macho factor, no thrilling lethal force to ostentatiously carry/manoeuvre around, no marching and beating the chest..... no more self-congratulation/deception ? Oh, and think of the uniforms that would disappear - not to mention the "noble, proud" traditions. No casualties for "defence" purposes - ever. Nah, it'll never catch on.