I believe in bits I call "me", and I understand there to be more bits. If "being" is me then being more is "supreme" to me....is it simply because of the fear of dying and they want the comfort of "eternal life" in heaven after their mortal one ends?
I personally take great comfort from "hoping" that I return to that state of nothingness I experienced...(or did'nt experience!) from the year dot up until the moment of my conception. That's my idea of paradise.
I have found that there are many philosophical ways of understanding being "more than me" (and "being more than me").