The ability to trust others when they give magical explanations for things is vestigial trait from childhood that has been extended into adulthood. It is good for a child to possess this trait since they have so much less knowledge of the world than the person telling them what to do and so would not understand more complicated explanations. The process is called neoteny. It is common amongst domesticated animals.
https://en.wikipedia.org/wiki/Neoteny
The most magical explanation of all is (the theory of) evolution. The atheist boldy claims "Evolution did it, see, here's the evidence".
Yes, yes but HOW? Evolution is a theory, not a process. It lives in the imagination only. Magic.
I'm not sure what you are asking. What are you seeking an explanation for?
Another thing is that the theory of evolution is indeed a magical explanation to most people (ie "sufficently advanced tech is indistinguishable from magic"). Trusting the magical explanations of others is advantageous in complex, specialized societies, which is why we are bred to do it. If there are multiple competing explanations, in the end it boils down to the individual choosing based on a combination of argument from authority and argument from consensus. So the important thing is how to make the choice of authorities and peer groups.