Addiction to coffee? Are there a lot of people for whom coffee is harmful yet they keep on drinking it? The only people I know who say coffee is bad for them do

Addiction to coffee? Are there a lot of people for whom coffee is harmful yet they keep on drinking it? The only people I know who say coffee is bad for them don't drink it. Obese people, on the other hand, continue to eat despite knowing it makes them fat and unhealthy. It's an addiction just like cigarettes and should be treated the same.