Out of all the physiological modes of perception, pain or nociception is probably the least favorite sensation for most sane humans on earth. Upon finding a genie in a bottle, agliophobics (people who fear pain) might first wish to never feel pain again. However, if on their way out of the genies cave, a young bat with poorly developed echolocation happens to swoop into their hair, mistaking it for food; they could stumble though a lava pit then continue on their way without even realizing that they have third degree burns all the way up to their knee caps! Pain may not be fun but this scenario illustrates exactly why nociception is one the most vital physiological sensations for human well-being.
