In the United States, 1 out of every 3 people has at least one tattoo. Clearly, the old-fashioned stigma that tattoos are part of a rough-and-tumble subculture has become a thing of the past. In fact, human beings have been decorating their bodies with permanent ink for thousands of years. Tattoos show up again and again across cultures and generations. There is something about getting a tattoo that is permanently apart of human nature. So then… why, exactly, do so many people want tattoos?