Coffee is addictive, takes time to make and consume, and costs money. Even if you make it cheaply at home, this is still money and time you would not need to spend if you were not addicted to it. The more often you drink it, the more you need to drink it every day in order to feel normal. You get to the point to where you need to make it a part of your morning routine. Our lives are complicated enough without it. What happens when you have one of those mornings where you simply don't have time to make coffee? You have to buy some somewhere, which is even more time consuming and expensive and typically creates temptation to buy a less healthy coffee. Coffee is acidic. It kills the good bacteria in your gut, which goes against the very core of taking care of your health. Because it quickly gives you an energy jolt, it is an addictive drug. Any time you introduce a drug like that into your body, your body adjusts to it. Whatever body function was necessary to achieve the affect the drug does for you starts doing less work, which always has bad side effects because it goes against how your body is designed. Caffeine consumption negatively affects your sleep, which is another key to health. Most people feel that as long as they don't consume it too late in the afternoon, it does not affect their sleep. But what happens when you regularly consume an addictive drug that gives you an energy jolt? Over time you need more and more of it to feel normal. Eventually you will need at least a small amount of it in the afternoon in order to not feel exhausted and be able to continue to be a productive, happy person into the late afternoon and evening. If want to, go ahead and believe these studies conducted by people you don't know, who haven't earned your trust. Believe that they conducted it in an intelligent and controlled way. Believe that they interpreted the results correctly. Believe that it is totally impossible that someone paid someone to get the results they wanted to publish. Or you can become in tune with your own body and reason about experiences you have had and will have.