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.

Huh, i should look at this. I've been an aggressive drinker for most of my adult life (2 pots a day at my height), but for kicks i decided to cut all caffeine for about 9 months. No real issues aside from very short term headaches, though even those i mitigated by gradually moving down in quantity.

Aside from the headaches what addictive effects are you referencing?

And sugar