Your post is also bad history.
Firstly, a full third of households held enslaved people in the south. Not just the rich elites.
Secondly, enslaved people couldn't just run away. Of course some tried but the risk of getting caught was very high and the consequences dire:
> The Fugitive Slave Act of 1850 strengthened provisions for the recapture of slaves, and offered them no protection in the justice system. Bounty hunters and civilians could lawfully capture escaped slaves in the North, or any other place, using little more than an affidavit, and return them to the Slave master.
> Many escaped slaves upon return were to face harsh punishments such as amputation of limbs, whippings, branding, and many other horrible acts
(https://en.wikipedia.org/wiki/Fugitive_slaves_in_the_United_...)
Not exactly comparable to the burden of college debt, wouldn't you say?
The history of the Underground Railroad and Caribbean slave rebellions shows that it was, in fact, possible for slaves to escape slavery. Smuggling yourself to Canada won't get you away from Experian et al.
But if you had read my post more carefully, you might have noticed that I did say that most people would share the opinion that slavery is worse, and those who did not were probably just doing it for rhetorical effect. It's the same sort of behavior as saying someone is "literally Hitler"--extreme hyperbole.
I think perhaps the concept of continual war has been advanced to conceal the fact that we as a civilization don't really need all hands on deck any more. Governments have been inventing busy work for people, desperately hoping that no one notices that an increasing fraction of the necessary labor is being done by robots, and unskilled laborers have become increasingly superfluous. But the Puritanical, Calvinist, Bradfordian cultural undercurrents in the US frown deeply and disapprovingly on idleness, even as those doing the majority of the frowning and tsk-tsk-ing are now "retired".
In the slave-holding generations, the institution of slavery was largely perpetuated by wealthy plantation-owners, as a political minority. Slaves could escape on foot. Nowadays, the student loan debts may not be discharged in bankruptcy, and will follow you to the far ends of the Earth if you run. You generally cannot inhabit a dwelling without steep rent or mortgage debt. You cannot work without making payments into a system that transfers 15% of your earnings to mostly the retired Boomers, through a system that may not even be solvent at the time Gen X starts retiring. Is that worse than slavery? That's a matter of opinion. I think most would say not, but some might say yes sarcastically or as hyperbole in addition to those with a genuine and vehement disdain of Boomers.