You have a funny way of interpreting non-quantitative evidence quantitatively.

Perhaps. You must admit you were heavy on the emphasis with regard to just how much addictive stuff you are already into. I'm glad to see your point was a little different to the one I had inferred! WoW is evil.

He argued that nicotine is harmful but was honest enough to admit that the evidence is mixed - from which I gather that the claim is not all that strong.

I saw that and followed the link. I was curious since I sometimes use nicotine sources myself - for most part it seems to a better drug than caffeine and, with the right delivery mechanism, less addictive. Hearing about the effect on plaque surprised me somewhat.