>>89240508Because Rick's perspectives are on a multiversal level.
Satan and God of one dimension are not omnipotent powers, a soul that can be understood and destroyed is not an immortal magical thing.
Rick disbelieves in the philosophies of morality, and anything mystical or beyond understanding.
Put simply; to Rick a "wizard" is a scientist, a deity is just a really powerful scientist. When frightened he prayed to an omnipotent god like most humans do when scared, but to Rick there is no proof in asingle all-encompassing creator; just an infinite small creators.