I believe it depends on your personal chemistry. I tend to be hypomanic. I take medication to help me sleep. If I drink coffee I will not sleep at night and it's downhill from there. So everybody's different. If you haven't experienced any downsides, then maybe it's ok for you to drink coffee. If you have had reactions, then keep trying to live without. It is addictive.
However, I read about a recent study that shows that some caffeine every day (a couple cups a day for the average person, with average ability to handle coffee) is actually good for you. The study shows that such people keep sharper minds as they age. (Like the little bit of red wine every day is good for your heart, if you are not an alcoholic.)
If you can't drink coffee, I recommend green tea, but only very early in the morning. Getting green tea (Sencha) in a health food store is best. If you can afford it, there are fancy ones online that are fun. (The flavored stuff is not really green tea, or the Lipton's Green tea is garbage, the dregs.) Choice and Eden make ok every day, relatively cheap green teas available at health food stores. Don't brew for more than 2 or 3 minutes or it can get bitter. If you don't like it, try Genmaicha (Sencha flavored with roasted rice, it's a bit sweeter.)
Another thing to try, if you go the no caffeine root, is Teeccino--In my opinion, it's the best coffe substitute available. It's heartier than say, Perrot. They use ground dates in it, which gives it a fuller body. This is also available online and at big health food stores--like whole foods, wegmans.....
God bless the people who can handle it. When I could drink coffee, I'd come in to work on a Saturday and make double the strength. Gone are those days. (Every now and then I cheat with 1/2 cup with breakfast.)
By the way, when you do drink coffee, it's very acidic, so make sure you have lots of alkaline foods, like salads, greens, almonds, avocado, lemon (strangely enough actually metabolizes as alkaline, don't know why), grapefruit, berries....
Good luck
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