Why would Zeus have affairs with mortals?

Zeus, the king of the Greek gods, often had affairs with mortals to assert his power and demonstrate his dominance over both divine and human realms. These liaisons were also a means for him to father heroes and demigods, who would play significant roles in mythology and help bridge the gap between gods and humans. Additionally, such affairs reflected the themes of desire and the complexities of love in Greek mythology, showcasing both the allure and consequences of divine interaction with mortals.