You forgot the most important part: good luck cashing them in, we're broke and were our Government ever stupid enough to try printing their way to paying them out, the entire world's economy would crash beyond the point of repair.
So good luck with that.
In 22 years, our fine, enlightened political leaders have amassed more than a trillion dollars MORE in debt each year. As Stein's Law, "it will stop."
How is anyone's guess. But those fine, enlightened political leaders probably can;t be counted on to be enlightened, and they certainly aren't fine. Regards.