[1] https://www.gov.uk/government/news/e-cigarettes-around-95-le...
"5 people killed in riot" is still a 95% improvement over "100 people killed in riot" but that doesn't make it a good thing.
That being said.. people are going to do it anyways. Sugar, caffeine, McDonalds, and hundreds of other things on the list that are not great for you but people do anyways.
If people are going to do it, why not choose the healthiest way to do it?
1. Many people that vape use it as a method to wean themselves off of nicotine completely. Since you can adjust the level of nicotine, they just use less and less until they aren't having any at all. Out of people I know that vape 3 have quit vaping/nicotine completely after a year or two, 1 vapes with no nicotine, and I vape with 1mg/ml of nicotine.
2. If someone has tried to quit smoking but keeps falling back, isn't vaping a better alternative? If someone is going to be addicted to nicotine, isn't it better that they vape rather than smoke since the harm is drastically less?