[hippich]

re sugar not being addictive.... i smiled at naivety... it took me years to get off sugar in my tea :)

regarding upsides of nicotine - one may improve mood, alertness, calm down anxiety. These are acute results. Long-term - I believe there are quite a few papers on nicotine usage being associated with decreased chances of alzheimer's. (just one off top of my head, there might be more.)