When do you live?

Below are the requirements for the position of Assistant Professor in Biology in the University X (U.S.A.). This is one of the many similar job announcements for Ph.D.-level graduates. As I read these job descriptions, my heart cringes and my question is, when do Ph.D.s live? Remember that unlike other advanced degree-graduates, Ph.D.s start their careers late in life (in the U.S., at least after 5-6 years of academics) and at low, low salaries/fellowships.

Teach three courses (9 credits) each semester that fulfill the requirements for the Biology and Science degrees using traditional, hybrid and online delivery methods. Courses include but are not limited to at least one upper level course in plants or fungi, one upper level course in genetics, and introductory level courses in these areas.

Teaching assignments may require teaching day, evening and/or Saturday classes as needed.

Publish in refereed journals.

Participate in professional organizations and in course, curriculum, and program development. 

Advise students and provide career guidance.

Participate in campus, University, and community service activities. 
 
It seems like 24/7 job. I am yet to read a job description that states "the candidate should demonstrate a successful ability to balance life and work"?