Why can’t you take the last cigarette?

Taking the last cigarette is generally considered to be impolite and inconsiderate, as it implies that the person who provided the cigarettes has not been given the opportunity to enjoy one themselves. Additionally, if the cigarettes are being shared, it can make the other people feel uncomfortable, as they may feel like they are not being given an equal opportunity to partake in the cigarettes. Finally, taking the last cigarette can also be seen as a sign of disrespect, as it could be viewed as a way of taking advantage of the other people who are sharing the cigarettes.