Final answer:
David's death is mourned because of the strong cultural attitudes towards death as a loss, highlighting how culture shapes our emotional responses to such events.
Step-by-step explanation:
According to the Ted talk on the essentiality of cultural diversity, David's death is mourned upon due to the strong emotional reactions of loss to the death of loved ones, which is a reflection of cultural attitudes towards death. In the United States, for example, death is commonly viewed as a loss rather than a natural or tranquil transition. This perspective is strongly influenced by cultural values and illustrates how the essentiality of cultural diversity can shape our experiences of life and death, underlining the profound impact that culture has on our emotional responses to major life events such as the death of an individual.