I'm sadly and hopelessly addicted to these comestibles at the moment. It's not a good thing. Perhaps I should move to Sweden, where cherry coke seems to be unheard-of. I occasionally go through lengthy spells of just drinking water - the first time, I think, was back in 2003 or so, when I had no job and even less money and realised I was spending a small fortune on coke - but I always end up getting back into the habit again. There should be carbonated-caffeine-patches that you can stick on your arms.
I'm also extremely fat, and I still haven't got all that much money (been spending too much on books and Sweden lately) and coke does give me heartburn and is probably ushering me into an early grave, and I'm fairly sure there's an inverse correlation between the amount of coke I drink and the amount of memory training I do, but I don't seem able to stop. Cheesecake is yummy too.