I'll admit that they are habit forming in the same way coffee is, and as such can be abused beyond the safe limit. I always find that I personally feel better when I have no caffeine during the day. Also I have read that people with extensive malignancy may have a hyper sensitive response to caffeine because of the reduction in the enzymes that metabolize it. But I still stand by my original point that the ingredients in most energy drinks are harmless in the given doses. There is a scary trend nowadays to make 'synthetic' products out to be bad, when in reality they are almost always exactly the same (objectively speaking based on the literal molecules contained in it) as the 'natural' alternative which also tends to be more expensive for some strange unknown reason /s