I thought it was for the original intent from stopping soldiers from being ordered to die by governments. The same governments that covered up or used the soldier's deaths for political gain. That's why Boss had to die for America.
It was only then that he came to understand what had transpired. He
understood why everything had fallen into place the way it was. He
understood the boss's mission. He realized that the country she swore her
life to threw her away for its own sake. To a nation, her loyalty was an
asset, and her self was expendable.
Outer Heaven was built for warriors in a world where they were slowly
becoming unwanted. As olive branches spread throughout the world, the
times changed but soldiers did not. Big Boss had always been a solider.
Fighting was all he was good at. His dream, manifested in Outer Heaven,
was a haven for soldiers such as himself that sought to live their lives
without being the expendable property of a nation they no longer cared
for.
This is some ill shyt if you think about what has been going on with soldiers coming home from war.