It's enough for me that other NPCs smoke. I would like to think that my character made at least one healthy decision in their life.
Still seems odd with all the things we can pick to do. We can't smoke. I can have a real evil character as bad as Attila the Hun if I wanted to be. I can kill and enslave the whole wasteland and eat the bodies if I want but I can't smoke?
Smoking was a big thing in the 1950s culture. I can see why the devs of FO3 had characters smoke and had cigarettes all over the wasteland. The man in the header right above Bethesda's logo has a pipe!.
If we can't smoke at least take away all the cigarettes or at least make them very rare. That way I won't think "man it svcks we can't smoke." Then I will go off and get drunk, gamble and beat a whole town to death.