In college in the university dorms I was logistically and emotionally fine day to day sharing a room with a friend and a hall bathroom with a hall of acquaintances, although in hindsight the price was absurdly inflated for that amount of real estate.

https://housing.unc.edu/apply/rates/

Yep, at the moment renting a room at UNC costs 2200 a month if you share it, nearly twice the mortgage on a 3 bedroom house. There's some disease in the american economy where cost cutting code actions magically inflate costs, and we buy it.