Current e-cig user here.
Honestly, as a smoker, it's a godsend. The smoke goes away so quickly, it has higher nicotine than cigarettes when purchased the RIGHT way, and since I can now smoke inside, I can puff on it all day every day as I work from home!
In all seriousness, it's worse imo. It sets the precedent from the 50s of smoking EVERYWHERE and now without any of the negative outward effects like smell or yellowing of the teeth/walls.
It's honestly made my addiction worse. To each their own for sure, but in my experience it just made my bad habit SLIGHTLY healthier, but much more accessible.
It requires a significant amount of willpower to break the addiction, but for those of us that do not, definitely do not pick this up. It will not help. If you have that willpower, it is useful.