Hi maxrab,

the small cigarette-butts consisting mainly of a filter are disgusting but tobacco is acutually dangerous. The amount of nicotine the body consumes by smoking is far smaller than by eating. So the tobacco of one (complete) cigarette can be deadly to a toddler.

As far as I know, the percentage of people smoking is shrinking specially among the more educated social milieu. So it is propably common that the reamining smokers are statistically less educated and show a less social behavior because of that.