I was a smoker for almost 5~6 years. when girlfriend happened she told me to quit so I had to try electronic one. And step by step, now i'm only vaping. I think that it is the best alternative for smokers, at least it's safer one. Of course, we and no scientists could verify if it's safer or more dangerous than normal cigarettes because their methods for testing it are illogical. We can take as an example when they did a research about cannabis when they just put a gas mask for a monkey and just fume them with cannabis smoke without any fresh air. So they do the same with e-cigarettes i believe (or maybe smth similar) So the true effect about vaping we will know just in a at least 50+ years from now.
All in all, vaping helped ME to quit smoking and now i'm vaping and every month i'm buying lower and lower MG liquid.