Responses
I think its because of the concept of magic and mana
They should invent new deity or something else cz this is getting kinda repetitive
There are actually lots of origin myths related to trees from different cultures and religions
My guess is trees/plants have played a crucial role in humanity's survival, so it's bound to be seen as a symbol of life, knowledge, sacred, etc
Manhwa authors probably use this concept bc it's a common one
Why does every other manhwa have a world tree and ofc its white glowy very old and all the fl gets in a situation where they seek answers from the world tree