I'm more interested in the state of research on e-cigarettes. 10 years on, have studies shown any harm?
Cancer usually takes decades to develop, as does vascular disease and COPD, so it’s still too early to tell.
They’re almost surely better than regular smoking, but I’ll be shocked if exposing one’s lungs to toxic aerosols is harmless over time.
Same. I'm deeply skeptical of any claims that these things are harmless, but they seem pretty great compared to regular cigarettes. I've never smoked so I have no first-hand experience with nicotine. I certainly take everybody at their word when they say that it's extremely addictive, and there's no serious dispute that cigarettes are terrible for you, so e-cigs seem like pretty good "harm reduction" to me.
Ideally, people would just avoid nicotine altogether, of course. But our job is to improve the world as it actually exists right now, not as we would like it to exist.