Thank fucking god. I hate teenagers that so this in public spaces. My friend's younger brother literally does it everywhere because "it's just water vapor bro". Literally all his friends do it to because they think there's literally no potential health consequences (even though all those flavor liquids aren't regulated by anyone). "Vape culture" is so dumb.
If you're using them to stop your smoking habit then I'm super supportive but literally everyone I've met that uses them does it because it's "cool".
I personally hate when people vape in movie theatres. Annoying as hell.