I accidentally vaped in a grocery store the other day. I was super frazzled and sleep deprived, had been running all over town all day like a crazy person, and was carrying my vape in my front shirt pocket. It was a completely automatic reflex reaction, take it out, vape, put it back. I realized what I'd done about the time I exhaled the vapor, and was worried for a minute. Nobody said anything. I don't think anyone even noticed. I don't typically vape in stores like that. I consider everywhere outside fair game though, and have had nothing but greetings from other vapers and the occasional comment that it smells nice.
I've vaped in several restaurants and bars, after asking the waitress/bartender and being told to go for it. Again, nobody seemed to notice or care. I wouldn't vape on a train, or the bus, or a plane, but I don't really care if someone else does.
I'm not going to be a jerk and blow vapor all up in someone's face, because I don't want someone blowing clouds of smoke (or reeking clouds of nasty perfume and hair spray) all up in my face. But I'm not doing anything wrong or illegal, and I refuse to be made to feel like I need to only vape in my house with the curtains closed and the lights off or someone might see me and get upset and singlehandedly ban all vaping because I blew a cloud while I was sitting by myself on a park bench. I spent too many years as a smoker feeling like I needed to hide behind stuff and shrink into alleys and apologize for existing, I'm not interested in feeling that way about vaping.