I go off cold turkey once in a while, and the worst I've ever gotten is a week of mild headaches.
What's good for you are other parts of the coffee bean.
I avoid taking caffeine with any regularity, let alone daily. This is why I can get a full kick from a cup when I need it.
Taking my last drink at the office and stopping for the rest of the day works.
Increasing doses only works up to a point, your brain has only so much capacity to support caffeine; anything beyond that just affects the rest of your body but does nothing to the brain.
I can drink coffee for weeks and weeks, and the stop abruptly and suffer no ill effects. Same thing with oral nicotine pouches. I can use them for weeks and weeks, and then stop cold turkey and have zero craving or desire.
I know people who do the same and the withdrawal absolutely wrecks them.
To my sadness, it feels like I'm excluded from a common universal community and performance advantage
I once tried to improve my math exam scores by drinking 4 espressos but didn’t feel a thing. I can easily fall asleep after 2 cups of coffee.
I wouldn't mind some coleagues taking some drugs, as long as they didn't make them very antisocial or generally bad to be around. But I would very much mind an employer expecting me to take something.