> And even in the areas where people are creating safer alternatives (e-cigarettes), there are politicians nearby ready to use their banhammers.
I don't think this ("banhammers") is a fair comparison.
To my knowledge, most if not all of the major regulation regarding e-cigarettes is around restricting the sale to minors or restricting the areas in which they can be used, as opposed to a blanket ban on the sale or possession of e-cigarettes.
All of that is analogous to existing regulation regarding cigarettes, alcohol, and marijuana[0]. The only difference from marijuana is that we're starting from the other end of the spectrum (zero regulation) instead of starting from a blanket ban, but the theoretical convergence point is the same: use of marijuana and e-cigarettes are permitted, but regulated in some way around the age of purchaser and location (setting) of use.
You can make the argument that restricting the use of e-cigarettes indoors (or by minors) is incorrect, but people have been arguing that 18-year-olds should be able to drink (like in the rest of the world)[1] or use marijuana, so the details of the regulation regarding those aren't necessarily perfect or justified either.
A better example of "banhammers" would be Salvia divinorum, which was legal in every (or almost every) state ten years ago, and is now prohibited in 8 states (and there were attempts to prohibit it outright, like marijuana, in several more)[2].
[0] in (e.g.) Colorado, where recreational sale and use is permitted.
[1] https://en.wikipedia.org/wiki/Legal_drinking_age
[2] https://en.wikipedia.org/wiki/Salvia_divinorum#US_legality