Motivations and attitudes Reasons for use Ex-smokers: quitting (24%), stress (17%) Smokers: reduce smoking (17%), enjoyment (15%) Never-smokers: stress (29%), enjoyment (26%) Satisfaction and barriers 63% of ex-smokers who vape find vaping as or more satisfying than smoking Barriers faced by smokers to vaping: fear of substituting one addiction for another (25%), safety concerns (20%) Misperceptions of harm 54% of people believe vaping is as/more harmful than smoking Misperceptions are highest among smokers who have never vaped (61%) and smokers who have stopped vaping (58%) Quitting vaping 19% of those who have tried to quit vaping using a particular method have used smoking as an aid to quit vaping 2.1 Reasons for use Ex-smokers: quitting (24%), stress (17%) Smokers: reduce smoking (17%), enjoyment (15%) Never-smokers: stress (29%), enjoyment (26%) Reasons for vaping Among those who vaped more than once or twice, the four main reasons for vaping are as an aid to quitting smoking (18%), followed by enjoying the experience (16%), to help with stress or mental health (16%) and preventing relapse (12%)

The brain scales back its sensitivity to dopamine, which results in a less satisfying high from using the drug, also known as tolerance
Some heavy smokers may take quicker and more intense draws, while some casual smokers may take slower and longer draws
The 2013 UCL research gives this real scientific grounding