pure nicotine is arguably a "nootropic" (boosts the brain up)

some people argue it is non-addictive in that state or that cigs' addictivity is hyped up

nicotine may prevent "covid" and parkinson's

https://www.news-medical.net/news/20211006/Study-shows-lower-SARS-CoV-2-infection-rates-in-smokers.aspx

https://www.webmd.com/parkinsons-disease/news/20000221/nicotine-improves-symptoms-parkinsons