Caffeine, like alcohol, being such a ubiquitous substance, is difficult to give it up in our society.
I found that it was very difficult to reduce or eliminate alcohol without doing the same with caffeine. They were like Yin and Yang, affect modulators.
I am impressed that you were able to give up both.
In time, caffeine will earn a deserved reputation for being a virulent substance, the neurotoxin and natural insecticide that plants create to poison the bugs that would otherwise kill them.