History does study and consider important records and artifacts that inform us about daily life of ordinary people in that time and place, it's not limited to "important events" according to some measure of importance.

For example, we consider valuable early writing on clay tablets that refers to accounting records, recipes and personal letters of ancient Mesopotamia (e.g. https://www.archaeology.org/issues/214-features/cuneiform/43...) which provide insight on how these people lived even if they provide no information on any specific major event.