My tone is somewhat serious and somewhat joking. If someone is addicted to a substance, even caffeine, then I would consider it intoxicating. Yes, things can be enjoyed without being addicted to them, but the topic here is caffeine addiction, not caffeine enjoyment. I think it's wrong of you to assume that coffee drinking can't relate to the fifth precept.
Along the Path, any thought, word, or deed that doesn't further the progress of the Aspirant is a distraction, an intoxicant.
When there is no Path, there is no distraction, no intoxicants. None are necessary, and none will distract.
Attachment and grasping comes in many subtle forms.
If you seriously feel that your caffeine addiction is detracting from your quality of life, then yes, they are real suggestions. I thought this topic was about addiction, which is a serious, harmful thing. Yes, the point of the fifth precept is to refrain from activities that cause heedlessness, and I certainly feel that coffee can cause that like the slippery slope in my last post. Sorry I didn't mean to offend you by my encompassing views; I am new to the Dharma, and as with every aspect of my life, people tell me I have a unique view. It's great that you uphold the fifth precept in relation to those substances, and I hope that I will feel the strength able to take that vow and uphold it some day. If you view caffeine as an addiction, I don't see why you wouldn't see it as an intoxicant.
Also, from your post previous to this one; Yes, I do see herbal supplements in the realm of food and beverage that should be avoided unless necessary. If Buddha survived on a grain of rice a day (yes I know, the extremes of asceticism), then we, too, should limit our luxuries when we see ourselves over indulgent. Clearly, neither extreme is the answer and we all have to find that middle ground that is so hard to tread.
If one just enjoys coffee and tea like other aspects of the household life, then I'd say it's fine. Clearly the correlation I see with smoking cannabis and drinking coffee is of no value here, so I will quit discussing it.
I'm very sorry if I've offended anyone. It was my intention to introduce a new and hopefully helpful view. Loving regards to all of you!