Huh? Resource-rich land is not a product of debt, it's a product of the land. High productive workers isn't a product of debt, it's a product of education and training. Being home to the largest corporations and brands isn't a product of debt, it's a product of decades of business-friendly laws (low taxes, low regulation).
Greece IS a risky place to invest, compared to the USA. Greece's current economic situation is FAR worse than the USA's, Greece have a very high chance of defaulting on their debts... the USA, at this point in time, does not (not that the debt binge can go on forever, but American politicians HAVE started to see the light now... rather than Greece, where they didn't see it until the debt collectors were knocking on their door) .
Nobody is forced to lend money to anybody, it's all done optionally. People have stopped lending to Greece (I say "lending", I /mean/ buying Greek bonds) because they no longer trust that they'll get all the money back. Investors still think that they have a very, very good chance of getting their money back from the USA.
As a side-comment, I do believe that, as the USA starts repaying its debts, we will see a rebirth in the US economy, as the State is going to have to draw back to a level that it used to be, back when the USA was in its golden days.
from what I get I think your wake up is gonna be ASTOUNDINGLY HARD man ...
I do not see how you can judge Grec economy "not sure" vs US economy "sure" while the biggest debt ever is the US debt indeed ad the % over the PIB is also the biggest.
Also, I do not see which mesure is gonna allow US to repay their debt particularly since, from now, people are starting to not trust them anymore realizing they will never get pay back, making the situation even worst. I doubt US will recover from this. It is not PuppetObama that is gona change anything.
And if China and others are still buying the US debt it is becuase they still need the US customers that buy so much of their "low end" products. It is indeed a big circle, but it is by no mean virtuous IMO ...
Time to Work !