That people find smoking objectionable is perfectly understandable, cigarette smoke contains a plethora of undesirable substances, many of them carcinogenic. For many years I have smoked away from everyone for the obvious reasons.
I recently replaced 40 years of smoking Marlboro lights with vaping. Absolutely nothing to be proud of nor news-worthy in any way, it simply seemed reasonable, once I had learned of the alternative, to replace a health-endangering activity with one that was less so.
Given that vaping presents no risks to bystanders, I quietly vaped at my office desk. Not a day later, complaints were raining and a manager called me in, declaring that vaping was forbidden.
Fine. At the next restaurant I visit, I will complain vehemently about the man who eats with his mouth open and demand that the old biddy with her Chihuahua be expelled from the restaurant immediately.