My brother was a Colonel in the airforce, Commander of the 10th Medical Wing. He is a really successful doctor who then led the VA for the state of alaska...
He is now CEO for a hospital in Idaho.
The point is that his life path was truly successful for him through the military and he has added great value to the nation through that experience.
Had he been a minion in a more oppressive style regime, such as China - or North Korea, or even Russia, then I would expect he would have been less effective at being such a positive value to those nations as he is to the US.
And this is due only in a small part as to his ability to have a happy, successful material life here in the US and also raise an amazing family.
That said, why do you believe that he succeeded because of the military and not in spite of it? Is his story in any way typical for veterans? From my understanding, not at all.
Also, why do you assume that Russian or Chinese military service is less valued or constructive for their service members than US service? Are you basing this on something, or just the general image created by US media about the Chinese and Russian armed forces?
Are soldiers with greater purchasing power more effective on the battlefield?