I was struck by this comment in an article about why display bans don't work:
As both Emery et al and Harrison et al report, only about five per cent of young people purchase their cigarettes from retail venues. Given that the overwhelming majority of adolescents obtain their tobacco from friends or family, their beliefs about the retail accessibility of tobacco are irrelevant to the decision to smoke. This accounts for the fact that in Ireland, as elsewhere, there is little connection between youth smoking prevalence and the ease of access to tobacco products.
So ruining Mrs Smith's back as she bends behind the counter won't provide the health benefits the nannying fussbuckets would like to see then!