Homo sapiens is a very moody species. Even though sadness and bad moods have always been part of the human experience, we now live in an age that ignores or devalues these feelings.
In our culture, normal human emotions like temporary sadness are often treated as disorders. Manipulative advertising, marketing, and self-help industries claim happiness should be ours for the asking. Yet bad moods remain an essential part of the normal range of moods we regularly experience.