When I first quit cigs and started vaping I treated it as if it were a cig. If there was no smoking I didn't vape. Now that it's been a few months I don't worry about it much. Still don't vape in places that restrict smoking, though. And I avoid blowing it in people's faces - unless they ask me what it is. Then I ask them what it smells like and it's always, 'it smells nice, kinda sweet...'
I own a little bookstore and at first didn't vape in there, either. Now, however, I do if I want to. Thus far, all of my customers are congratulatory when I tell them I've quit smoking and are curious about vaping - especially those who still smoke. I hand out cards for the local vape shop to those interested. In fact, last week my sister-in-law met me at the shop so I could give her my starter kit. She wants to quit smoking. There were several customers in the store while I explained how to use it to her. They were all very nice about it.
So - little by little I'm losing the 'shyness' or shame about it.
Have to admit, though, that in the beginning I was also 'shamed' into the mindset that I was doing something wrong. Not so anymore.