Morally, our personal share of national debt should be related to how much wealth we have. $52k sounds like a lot of money to most of us not in the 1%, and especially someone who is poor, but really, it sounds like a lot just because we have such a small share of the GDP.

Practically speaking, ya, it would be a challenge to make the system fair. But either the rich will pay, or there will eventually be some kind of destructive revolution to bring things back into balance (probably by making everyone poorer).