The future of e-cigs is uncertain. New York City and Chicago have recently banned the use of e-cigs indoors, while the decisions of other states remain uncertain. Because officials haven't been able to assess the health effects of e-cigs, they should be used with caution. The reality for some is that the technology is allowing many people to kick the traditional cigarette habit, which is a good thing. Regardless, e-cigs are rapidly changing the tobacco industry and is making companies record profits.