So, it's not about a meaningful harm, it's about a subjective preference?

I've vaped indoors for 3 years, using a dry herb vape with flower on prescription, and we haven't noticed anything at all. I have family that visit once a year, they were here recently and didn't notice anything (my wife asked, because she's paranoid about the smell). Many others seem to agree. Maybe it's different if you use carts, I don't know what's even in those.

Er, vaping is 100% NOT smoking.

There is no fire/combustion involved when vaping. Vaping is when a liquid is heated up enough to turn it into a vapour. The same process as heating water enough turns it into steam. That's it. The liquid will have flavourings and nicotine added to it, meaning the vapour produced will deliver said flavourings and nicotine to the person inhaling it. The exhalation will contain remnants of that vapour along with just water vapour - most of the flavourings and nicotine will be absorbed by the person who inhaled it.

I always get puzzled as to why people say they are /disgusted/ by vaping, or why they equate combustion based smoking with the non-combustion based conversion of a liquid into a vapour. Help me understand you. What part disgusts you about vaping? That you can see a cloud of water vapour being exhaled? Have you ever been out somewhere where a fog machine is being used? Congratulations, because the liquid used for the fog machines is mostly the same as used in vapes and also asthma inhalers.

You might as well get "disgusted" by the fact that if you are in a room with another person, you'll inevitably be inhaling part of that other person's exhalation! I guess that's okay though, because their exhalation products aren't visible to you?

I'd be opposed to legislating against anything just for being "disgusting"; there should be a stronger reason for us to limit each other's personal freedoms. In the specific case of vaping,I understand that secondhand "smoking" is still in issue, so that's the reason to legislate restrictions.