With the publication of Maggin also said that Superman adheres to "a Kryptonian-based belief system centered on monotheistic philosophy." There is widespread agreement that, based on the lack of any depiction of congregational membership or church activity in his comic stories, Superman has not been a regular churchgoer as an adult.
Writing such a story, which starts with a simple high concept in the 1950s and brings us up to date (where Superman narrates the whole thing shortly before his suicide), was always going to be a laugh.
For example, popular comic book writer Mark Millar () has written that Superman is a Methodist.
Curt Swan, one of the best-known and most influential Superman artists, was raised Presbyterian but also attended Methodist churches while growing up (see:
The father and super-powered son are framed in front of a Christian church (note the cross on the tower or steeple in the background).
Later on this same page, Superman mentions "the solid, moral foundation my foster parents gave" him. Maggin, an observant Jew who is one of Superman's most popular and influential contemporary chroniclers, stated in a 1998 interview that Clark Kent and the entire family are Methodists.