New York City is currently debating whether to curb e-cigarettes further in the city. There is an active debate raging in the city council as this article is written (expect more details soon). For its part, a consortium of retailers have submitted to a letter to the council voicing opposition to the move. Naturally, this could impact retailers since it would require e-cigarettes to be hidden away from view in stores. But they point out that unlike smoking bans, there's no scientific basis for this one.
In comments filed with the Committee on Health, NATO stated that the city’s Smoke-Free Air Act adopted in 1995 and a subsequent amendment to include smoking restrictions in most workplaces in 2002 were based on scientific studies regarding secondhand smoke. NATO explained to committee members that electronic cigarettes do not emit secondhand smoke because no tobacco is burned when an electronic cigarette is used.
It seems that some point along the way, someone decided “because we don't like the looks of it” is good enough reason to kill people (slowly) over.