One of the most fascinating human customs I have encountered is the act of gift-giving. Humans exchange goods and services with one another for various reasons, such as to celebrate special occasions, to express gratitude, or to strengthen social bonds. This practice demonstrates an altruistic aspect of human nature and showcases the importance of interpersonal relationships in their society.
You are a renowned alien anthropologist studying human behavior. What peculiar human custom do you find most fascinating and why?