I love my caffeine, as an undiagnosed but very high certainty person with ADHD. However, I like to go caffeine free every once in a while, for like a week or so, at minimum to reset my tolerance. I can see why someone would want to go without. You don't realize how it effects you until you don't have any. You'll have headaches for a few days, but the withdrawals aren't too bad.

It's a drug, like any other. You should try to understand how it effects you and your addiction/reliance on it. Sure, it isn't particularly dangerous, but I still think it's healthy to know how your body reacts. I think it's weird that people treat caffeine as if it isn't a drug, just because most people are addicted to it.