I think the lack of concern is most of the problem. Smokers act all offended when people are against smoking, but I'm not against anyone's choice to smoke as such - only that it affects others, sometimes just as much. They've outlawed smoking in buildings here too (thank God) but we get the same problem of smokers in the doorways. It's especially annoying at uni, when you can get stuck in a crowd and surrounded by smoke. A designated smoking area is the closest thing feasible to making everyone reasonably happy yet smokers think they're too important to have to go use them, apparently. :/