When you stop and think about it, the human species is the ultimate variety pack. We embody a collection of physical features in a staggering array of combinations. In all their diverse glory, though, most people are dissatisfied with at least one of their features. Some want a smaller nose or a flatter stomach. Others want to be taller or to have bigger muscles. Some yearn for thick, luscious hair, while others dream of a movie star smile. Despite these insecurities, people generally go on living their lives.