[sxiin]

Well, I quit drinking coffee 3 years ago and I can confirm all this. Before quitting I drank approximately 3 mugs of coffee per day.

Withdrawal symptoms for me were a really bad migraine for one whole week and that actually made my final decision to never start drinking coffee casually again.

However, as I try to avoid all kinds of absolutism, I enjoyed a small cup of campfire coffee last autumn.

For some reason drinking tea doesn't make me anxious or tense.

[kawfey]

I like to believe the calmness from tea comes from L-theanine, commonly present in tea leaves. https://en.wikipedia.org/wiki/Theanine

However, experimenting with putting theanine in coffee and consuming energy drinks with caffeine+theanine aren't as relaxing, perhaps because of the higher caffeine content, or other relaxing compounds in tea.

I drank about 40oz of coffee a day, and had the same symptoms if I stopped. I started replacing coffee with tea and the symptoms were a lot less severe. I'm now down to about 1c a day of coffee I grind and brew myself, as if it's a hobby enjoying the flavors and characteristics of different beans/grinds/brewing methods, not because I need caffeine to be a functional adult.