> Even if with investment returns as low as 4%

That line of reasoning always make me smile.

That's like assuming that once you get a certain threshold of wealth, you can automatically assume you'll be fine forever.

And by the way, that "as low as 4%"... Most people throw percentages all around the table, easy like that... Seems funny.

Call me stupid, but the idea of a whole country being able to piggyback off all other countries seems unlikely to say the least.