This is always mentioned when people talk about addictive substances being widespread. However, I think the key thing to think about isn't whether somethings addictive or not, but if said addiction comes with significant negative consequences/attributes. I don't think you'll find many people saying Caffeine is GOOD for you, but it just doesn't have significant negative outcomes like Tobacco.

There's lots of evidence for positive influences of Caffeine on the body (some negative as well), especially the brain. In particular, there's active and promising research on the neuroprotective effects for Alzheimer's [1] and Parkinson's [2].

"There is a wealth of accumulating biological, epidemiological and clinical evidence to support the further investigation of selective adenosine A2A antagonists, as well as caffeine, as promising candidate therapeutics to fill the unmet need for disease modification of PD."

1: https://www.mdpi.com/2218-273X/13/6/967 2: https://pubmed.ncbi.nlm.nih.gov/33349580/

Psychology in general tends to make the same distinction. There are lots of behaviors which may be considered abnormal but do not have a meaningful impact on the quality of life of the person or those around them, and so there little reason to pathologize it. The goal of medicine (and, in my mind, well-designed public policy) is to prolong quality of life and not to ensure everything adheres to strict standards.

caffeine addictions are good for you? so i guess all of the people taking stomach meds are doing it for fun and not how much coffee wrecks your stomach. also the number of our teens/young adults addicted to energy drinks is insane and no one can argue that stuff isnt a net negative to the body

Nicotine has positive and negative effect tobacco is one delivery method.