I think that the problem is that ecigs still produce vapor, and the anti-smoking industry has spend nearly a generation convincing people that second-hand smoke is the devil. Having long ago quit smoking indoors to keep from subjecting others to second-hand smoke, I understand the stigma, but there are those who will simply refuse to be convinced that vapor is not the same as second-hand smoke, which is why so many places are rushing to ban indoor ecigs, regardless of how non-sensical those policies might be.