Primitive man, just like ourselves, do want answers. But the answers back then were most likely derived from misconcetions, made-up folklore, and just plain bullshit. Most wrong. But as our science and understanding advanced, we replaced those folk tales with verifiable and rational answers. Why is there lightnening? The gods in the sky (or mountain tops) were having a party. Now we know that friction between particles in the sky generate static electricity, eventually discharging to a lower potential.
Most people do not have issue with such answers. But in religion, they cling to those same old stories, as if they were valid and true. We now know this Earth is not held up by a god or something else, we know it is an oblate spheroid circulating out sun, bound to it by gravity.
Religions is slowly experiencing a loss of those old answers.
There is also another answer, and it stems from childhood and school. One is expected to know the answers, everyone is expected to raise their hand when the teacher asks a question. Children are chastised when they say “I do not know”, when that may be the best course of action, the honest one.
We witness this all the time from apologists, when we are asked such questions as “where did the universe come from?” They pounce on the honest answer of “I do not know” treating this answer as a shortcoming and a failing, then attempting to shoehorn in “But I know, god”.
They believe bullshit trumps honesty.