I can tell you what my doctors think... (I've a few, due to a couple of degenerative illnesses - does that make me a degenerate, lol? /winkyface)
One by one as I've told them, they've been ever so glad to know - one even clapped me on the shoulder in congratulations. Two different doctors (one while I was in the ER, and the other mentioned it while I was in the recovery room after an outpatient procedure) told me how grateful they were that I was vaping*, because quite a few patients who smoke/use tobacco for their nicotine start getting super antsy and often angry or mean. I was a little humbled at that, because that used to be me.
The clinic where I get my monthly medication by IV (for MS) allows me to openly vape while there, since I'm there for two hours. The other people who come or go in the room for their own treatment often ask openly about it, and only once have I ever had someone disapprove; it was another patient. We were well apart in the room, though, so she didn't complain about me directly - I assume she'd heard or found negative information on vaping and allowed her emotions to run with it. I just avoided her - that specific mix of anger and emotionalism is not something I want to 'take on' or try to 'change', since it's often based in fear and will purposely often argue for the sake of arguing, and try to make you look bad.
Quite a few strangers have asked me about vaping in general, because on the street or otherwise in public I'm openly puffing away, since that's still ok here.
Cheers! Thanks for starting this thread - hopefully it'll gain some traction!
*After asking permission. Much easier in those environs to ask first.