I'm honestly between torn between Naturally born in fantasy world or Transported in fantasy world, can I get advice as to the pros and cons of these two choices?

I'm writing a fantasy world, but the idea of how the protagonist starts have two routes, either he was naturally part of the world from the beginning, or the character was transported into the fantasy world from the real world,

Like Narnia for example,

One pro of getting transported is relatability towards the protagonist, because he is a person from our world, so him exploring could allow readers to experience the journey on a certain level,

One pro of natural born is there's a deeper immersion in that world, and everything is natural for him, but not relatable in a way as if he is a foreign person to us,

I'm torn between these two choices, they have both so much potential, my mind can create excitement on both sides, but I can only choose one