Others have pointed out that this amount is comfortable enough relative to GDP, but I also want to point of your method of arguing is dishonest. There will never be a day where the entire debt of a country is divided up among the citizens and then they each would have to pay that amount, so saying it’s 60k debt per each soul is kind of like a football fan saying that each Kansas City Chiefs fan each won .00001% of a Super Bowl Trophy last year. It’s sovereign debt.