Mostly psychological and irrational. I don't like the feel of the vapor in my face, it definitely feels and smells off-putting. It's the unseemliness, the (my W

Mostly psychological and irrational. I don't like the feel of the vapor in my face, it definitely feels and smells off-putting. It's the unseemliness, the (my Wikipedia-level understanding) lack of scientific evidence backing up claims of non-harm. And if you do it in a theater it's distracting.