[eru]

Nicotine is actually good for you (at least no worse than caffeine). It's all the other stuff in tar that's bad for you. And that part of the smoke is bad pretty much whatever you burn.

Vaping avoids most of that.

[HWR_14]

Nicotine is far more addictive than caffeine.

[eru]

Compare and contrast https://gwern.net/nicotine