I believe excellent fantasy reflects us all, and yes, it can use those myths that underpin societies, our subconscious yearnings and longings, and perhaps our barren spirituality.
I was always interested in myths growing up. So, first I got into some Roman myths, then I was interested in Norse, then Celtic, then I started spreading to all the other mythologies.
If you look back at the great classics and the epics and myths, they were for everyone. Different people got different things from them, but everyone was invited to participate.