Sleep is one of our most important vital functions, and yet we value it so very little. We all hear the "eight hours a day" standard, but how many of us actually get that many? Worse still, once we're in a hole, how many of us are able to sleep even more than eight hours a day to start making up lost hours?
One of my good friends, a unfortunate wageslave, complains about her frustrating work scheduling. They'll have her work late one day, then work early the next morning, despite her repeated requests for stable hours. Apparantly they can schedule their employees whenever they want so long as there are eight hours between shifts.
Presumably they believe that people can somehow magically use all eight of those hours for sleep, and not need to spend some of them commuting to and from work, feeding themselves, and taking care of other basic needs. When she tries to explain her situation to her fellow wageslave manager, she gets told off for being "lazy", with the manager claiming to work two jobs and to only get four hours of sleep each night, and that if they can manage it, she should be able to, especially since she's younger than them.
We treat our health as a disposable commodity in this country. This is why we can't figure out a proper healthcare system. We're culturally trained to believe only the wealthy deserve to be healthy.