Heh, I'll bite...
Personally, no problem. I don't condone it, wouldn't encourage it, and would never support it, but I wouldn't try to stop it. Who am I? Just a guy who started smoking in his pre-teens mostly because all the adults told me I couldn't. I'm not going to be the one who tries to stop someone else from doing something I myself find so pleasurable, and I don't need to. There are more than enough people who are ready and willing to play that role. Heck, there are more than enough people who want to prevent me from vaping too, and I'm an official adult.
The problems I see are the problems those other people will have. Most of them will also have problems with that same 11 year old skateboarding on a public sidewalk. It's a no-win. Yes, I care, but I don't want to be involved in ANY crusades, especially the "Protect Children" variety. There are too many "Child Protectors" already. I am sure of this, since I've spent so much time protecting my own children from them. It's everybody's favorite bandwagon to jump on, since it's so...beyond refute. Anyway, I just can't stomach that degree of mainstreamism in my life.
Also, I'm not buying into the irony/paranoia of "We must take a stand against it because it's our responsibility as vapers." That's just another way of saying "We must not condone it because we're afraid of being blamed by association". We'll be blamed anyway. I'm not afraid.
I know. I'm a bad vaper. Ok.