I have to agree, when I am in close proximity to others I will restrain myself and not vape.
But if I'm in the frozen food section and the only person around is a young guy who could care less. HELL YEA IMMA VAPE IT UP! lol
As for vaping on a plane, well... your in extremely close proximity to at least 10 other people... lets not vape on planes. Even if your juice smells like a fairy just farted rainbows in your face, I would prefer not to insult 1 out of those 10 people and cause a scene.
Never vaped in a restaurant either, though I always bring my PV in with intent to vape lol.
Lets just remember this awesome quote from Men in Black "A person is smart, but people are dumb panicky animals!"