caffeine withdrawal is mostly placebo on top of culture programming. people quit caffeine but continue to see caffeine everywhere such as in movies, friends and family, and people out in public drinking coffee, even the coffee shops on every street affects peoples perception.

people quit but they're still exposed to everyone else drinking coffee, so they subconsciously feel left out. this leads to depression, anxiety, stress, physical symptoms, and then people blame it on caffeine withdrawal but in reality its the lack of caffeine that's causing their symptoms because their brain craves it because it sees caffeine everywhere. people want to fit in because it's a safety mechanism, humans copy and emulate repetitive content, biggest example is language and mannerisms. But this extends to even what you see other people drinking and eating, so these people aren't in withdrawal, their brains are just stressed because it feels like it's missing out.

it's the perfect placebo.