For
It protects people from second-hand smoke.
Against
Smokers have fewer places to go and may ignore the rules.
Anonymous excerpts, translated where noted.
“Cigarette smoke makes nearby people passive smokers WITHOUT THEIR CONSENT.”
“The cleaning staff spent their evening picking up cigarette butts thrown on the ground.”
“Some felt it would be too great a deprivation of freedom and a measure that would cause problems later.”
“Especially because of the practical difficulty of enforcing the measure.”