Universities treat adjuncts like they do because they can: https://jakeseliger.com/2016/02/25/universities-treat-adjunc... . When adjuncts stop accepting offers, prices will rise. I'm puzzled that more liberal arts profs don't teach high school: https://jakeseliger.com/2012/05/22/what-you-should-know-befo....

I teach as an adjunct because I like teaching and have a real job, so it works for me. But I worry about many others, especially the ones who are thinking about going to more grad school because they don't know what else to do.