reasons why people smoke cigarettes global is tobacco use so prevalent in Europe? : r/geography Why People Smoke – Penn
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After all, vaping is a lot better for you than smoking cigarettes: About 11 million adults vape, and some percentage of them are former smokers or would be smoking in the absence of e-cigarettes

They're not without risk
Research on Electronic Cigarettes: Advertising and Promotion Ontario Tobacco Research Unit (OTRU) 2020 Report on recent findings, centred on advertising and promotion, from the OTRUs Research on E-Cigarette and Waterpipe Health System Research Fund project
Treatment will depend on how much nicotine has been ingested, but doctors commonly use activated charcoal to bind the nicotine in the stomach and take it out of the body

doi:10.1353/hpu.2013.0173

To calculate vape equivalent to cigarettes, one needs to first know about the nicotine content in a cigarette