A simplistic hypothesis and query: Suppose a person (you?) is born, raised and enculturated in the ordinary ways in a typical community environment, but with the specific exceptions that the members of this community are entirely without superstition and that in no case is the idea of a supernatural entity, belief system or religion ever mentioned. No exceptions. This person receives an excellent formal education and again, no superstitions or supernatural entities, belief systems or religions are ever referenced. No exceptions.
It is the 21st century and much is known about the universe, the world and the human condition, but a great deal is unknown as well. At some point in the process this person, having normal human attributes and intelligence, must desire answers/explanations for things unknown.
So, subject to the (impossible) conditions imposed and just for the cerebral gymnastics: What will this person do to satisfy that desire to know?