It adds moisture to dry air, which may be useful in very dry climates or during dry seasons
et al, A Randomized Trial of E-Cigarettes versus Nicotine-Replacement Therapy, New England Journal of Medicine , January 2019, Yadira Galindo, University of California-San Diego, Americans are quitting smoking in higher numbers, ScienceDaily, July 26, 2017, [15] Public Health England, E-cigarettes around 95% less harmful than tobacco estimates landmark review, news release, August 19, 2015, [16] Michelle Roberts, E-cigarettes should be offered to smokers, say doctors, BBC News, April 28, 3016, [17] The National Academies of Sciences, Engineering, and Medicine, Public Health Consequences of E-Cigarettes, Consensus Study Report Highlights, The National Academies Press, January 2018, p
It is fair for what you are getting and if you want good looks, it is worth it.
It may irritate you, and you may not like it, but it will not make you sick, and it will not kill you
Its important to note that while proprietary connections offer unique features and aesthetics, they may limit the flexibility to mix and match cartridges and batteries from different brands or models