It's the quality of sleep that is the biggest concern. Sleeping poorly affects your productivity, creativity, and your health. The social isolation is also bad

It's the quality of sleep that is the biggest concern. Sleeping poorly affects your productivity, creativity, and your health. The social isolation is also bad for all the above since it will likely lead to depression. Seriously, once I rented someone's large closet in Phoenix for $100 a month when I needed to save money. I showered in the gym and stayed in my office all day. Even in the most expensive cities someone will take a "ghost roommate" for $500 a month; pennies compared to cost of a physical/mental health related disorder.