A small study done by The Center for Tobacco Control Research and Education at The University of California, San Francisco, "suggests that e-cigarettes don't actually help people to quit smoking." However, of the 949 smokers in the study, only 88 used e-cigarettes, causing the study's researchers to "admit that their findings should be viewed with some caution."
World Science reports "They also found that e-cigarette use was more commmon among women, younger adults and people with less education." Last year, the US Centers for Disease Control reported e-cigarette use more than doubled among U.S. middle and high school students from 2011-2012. The lack of solid research, potential youth market, and abundance of caution have had anti-tobacco activists and researchers pushing for a ban on advertising of e-cigarettes.
NPR has a recently story about "vaping" (using e-cigarettes) indoors and in the workplace.
If you smoke, have you been able to cut back your smoking or quit thanks to electronic cigarettes? If you do not smoke, does it bother you that others use e-cigarettes indoors?
Some of all of this is the relative safety and prosperity, but some of it is also a matter of the two income family becoming the norm. When I roamed all around the neighborhood and the next growing up (in a nuclear family), it was a good bet that if there was a problem there would be a responsible adult at nearly every house. It helped that the nightly news wasn't at that time better titled 'the moral panic hour'. I don't advocate a return to women staying home, rather that pay grow to match the massive productivity gains in the last few decades and a move to two part time incomes as the norm.
The two-income family is just the latest incarnation. It takes two to three generations for a way of thinking to die out. We are now about a generation past that point. Many people don't even have a living grandparent who remembers the freedom kids used to have, and how no one (save a very few nutjobs) worried about 'em round the clock.