I don't mean to blame you, but for the sake of anyone reading this -- you could absolutely have negotiated this down with the hospital by pleading financial hardship.
I'm not trying to justify the system overall, but please don't take a $150k bill at face value, if you can't reasonably afford to pay it.
It's true you can negotiate, but it's also true their bar for "reasonably afford to pay it" absolutely can include emptying your savings and other assets.
Hospitals' bar for reasonably afford is low, in my experience. They want proof that you make poverty line wages or below to write it off, below 300% of poverty line (around 38k) for reductions.
I'm not trying to justify the system overall, but please don't take a $150k bill at face value, if you can't reasonably afford to pay it.