Put me down in the "it's none of my business what other people do" category... especially when what they do is something I love to do.
I've never understood the attitude that we, as vapers, should discourage vaping by newcomers. I think people are probably always going to want to "smoke" just like they'll always want to drink, and eat tasty (less than healthy) food. So I fully expect that as vaping completely obliterates traditional smoking a lot of people will take it up, even though they've never smoked.
Until/unless some legitimate research demonstrates that it's a serious health risk, I can't find any reason to discourage others from doing what I already do.