Why were floods and other natural disasters a topic that ancient people focused on when creating myths?

usually sent by a deity or deities, destroys civilization

Explanation: A flood myth or deluge myth is a narrative in which a great flood, usually sent by a deity or deities, destroys civilization, often in an act of divine retribution. Parallels are often drawn between the flood waters of these myths and the primaeval waters found in certain creation myths, as the flood waters are described as a measure for the cleansing of humanity, in preparation for rebirth. Most flood myths also contain a culture hero, who "represents the human craving for life".

it u understand what he thought at the time and let u know more about him then what third person would of known probably. hope this : )