As a strict and allergic non-smoker, I concur that blanket bans can be overkill. Growing up, I witnessed - and appreciated - the cultural progression from "people can smoke anywhere they want" to "let's set aside a corner of the place for non-smokers" to "let's keep a corner for the smokers" to "people can smoke outside. But I have to say that I still find the idea that I can walk into a smoke-free pub, in Scotland, positively absurd.

I think there's definitely a need, from a cultural standpoint, from a policy standpoint, even from a public health standpoint, for small enclosed poorly-ventilated spaces where people who like smoke can share it.