Sap dude,
I can write a book why people choose to stay in the USA. You seem to think "villager" is the only cause. Six figure salary does not give you an extra brain. Put your money where your mouth is. I save more than you with a 5 figure salary. Does that make me smarter than you, I don't think so. Money isn't everything.
Regardless, it is people's choice. I don't think it is an issue to serve in the US army. We have a history of "Bir Gurkha" serving in the British, don't we? It's about time we have few in the US.