> We also mentally debate whether or not it’s a good time to take a shit, but that never makes it into books.

Stephen King will definitely have a character thinking about needing to take a shit. I'm pretty sure I recall multiple characters pissing themselves. Hell, one character in Under the Dome spends most of the POV chapters dealing with their migraines (when they aren't, you know, murdering people and commiting necrophilia).

The whole vibe of Stephen King is that he peels back the decorous surface and shows all the gross, creepy, murderous, dirty, selfish, avaricious aspects of human nature that we try to pretend don't exist. If you want an escape from any of the whole rainbow of base instincts that humans struggle with, then King is not your jam.