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There was a report to Congress a few years ago suggesting that the amount of nicotine that these deliver is damn near homeopathic. I think that's possibly right; as I have never gotten the buzz off one of these that I used to get from cigarettes or cigars. I think it's a shame, because I think that Nicotine is a rather good drug. So I doubt that it has much real value to get rid of people's actual dependency on nicotine. Plus, a lot of the fluids have no nicotine at all.
In which way is nicotine a good drug? Does it have medical benefits if used in certain ways? If you want to feel a buzz via drugs or get high, aren't alcohol or pot more efficient ways of doing so? Smoking tobacco just seems pointless to me, but I have never regularly tried it, just socially a few times when I was younger.
I think vaporisors are good for the sole fact they don't leave lazy people any butts to chuck on the ground, in garden beds or AROUND bins.