My husband stopped. Then our four year old decided to walk to school alone in his spidey underwear (only made it down the street) so he started again. Now he's quit again but he has future-grounded our son in 10 years time for incurred stresses...
Although I don't agree with the "Just quot" given smoking is an addiction, those who do smoke should try to quit. This picture is really really cool though
[not sarcastically]
Good job. You've broken a bad habit.