It can cost upwards of $180k per year to train a resident in the US. Stop with the BS about how much revenue they bring in... they don't, and they're a liability.

When I worked at an academic center my residents were often out the door on non-call days hours before I finished. And you spend a ton of time teaching, looking for and catching errors, and explaining to angry family members why what the PGY1 said on pre-rounds was incorrect. Residents don't bring more quality of life to attending, but quite the opposite. Academic attendings are rewarded by being paid less than their private practice colleagues.