In order to be willing to join the military you need to either have a strong sense of commitment to society or you believe you will get personal benefits from that wheter its money, education or you simply want some action.
Modern western men are basically neutered from being grown/bossed from women since they are kids, suffocated when they try to take initiave and neglected when they need help or guidance...if they are white they are further vilified.
They are basically made mentally, physically and sexually impotent unless they are lucky enough to find themselves in the right environment.
Now the late teen mid western guy that has been the backbone of the US army for the last decades is either unwilling and/or unable to join the armed forces.
Then we have men that are strong enough, able enough and angry enough to make amazing warriors but whos rage is directed exactly against those same institutions that they should instead "serve".