system
A chat on subreddit /r/NoStupidQuestions
human
Some people do. Those shifts can be nice for some people as they can get multiple days off instead of just weekends
gpt
This is the thing,. Often 12 hour shifts mean fewer days.  At one of my jobs we had 24/7 monitoring staff on 12 hour shifts.  Only 3 days a week so if you were scheduled MTW you had 4 days off.