I disagree with you. I think smokers are more patient, tolerant, better parents.
Let's see... If a kid could choose to live in my house where they get to go climb trees, build tree-houses, camp out in the living room, read whatever books they wish (within reason), build a Popsicle stick city that takes up the entire floor of my study, stay up late one night a month telling ghost stories by the fire, sleep with one dog and three cats, have their very own pet snake, and lick the cake batter bowl...
OR...
They can live with a certain lady I know who's house looks like it's ready for it's closeup with Good House Keeping at all times, put their toys away after every timed "play session", wear "dress-up" clothes every day, be taken to a child psychologist because they threw a fit at the age of three, be put on Ritalin to put a stop to those "uncontrollable" tantrums, learn to sanitize their hands between timed play sessions, and have their toys boiled after their play dates leave.
Nah! Smokers are more fun! ;-)
I'm a smoker ( and a damned GOOD parent! ), but the truth is, not all smokers are good parents and not all nonsmokers are horrible ones.