Why do people need religious beliefs and ideas?
Myth is an extremely complex but interesting topic. One of the problems with the term myth is its colloquial use to mean false. I embrace it in the sense of the whole idea of symbolic dimensions. There is so much interesting reading in this area from the writings of James Campbell, Carl Jung and Mircea Eliade. In thinking of the mythical we are talking about a whole dimension of experience of trying to capture truths.
We have the whole story of Adam and Eve and the garden of Eden as a starting point. This has caused a lot of controversy and, really, if you think about it the account probably was part of oral history which got written down and some people have taken it all so literally, when it was never written down on the first day of creation, like a newspaper report.
One mythical idea which I find fascinating is the whole idea of the fall of the angels and the consequent fall of mankind. I was taught this very strongly as a child and when I tried to explore this idea I discovered that it is more based on Milton's 'Paradise Lost' than the Bible. However, if you look in esoteric literature there are all kinds of ideas about the fall of Atlantis and Nephilim giants who ruled the earth. It is so hard to know if this is pure imagination.
Myth fascinates me and it encompasses all the comparative religious perspectives. One of the best resources which we have is art and I am thinking of all the riches within religious icons of Christianity, Hindu art and statues of all the gods and goddesses and the many other varieties of symbols. The symbolic dimensions are endless and we can begin to access them in our dreams or in out of body experiences. Some Eastern thinkers speak of this dimensions as the 'astral plane' but I would guess than many philosophers would be very suspicious of this concept.
I have read some of a book, 'The Physics of Transfigured Light: The Imaginal Realm and the Hermetic Foundations of Light' , James Marvell (2016) which suggest that there is an imaginary dimension, which is objectively real and the author even suggests that it is from this realm may even that from which Plato's forms are derived. However, when we get into the whole question of dimensions beyond us so much is speculation and, as much as I am fascinated by the imaginary it is possible to go off into tangents, but I do think that the nature of myth, should have a place, like religion, in the philosophy.