If you don't smoke,don't start.Highly addictive because of the additives that the tobacco companies put in to make them MORE addictive.They also add more nicotine to keep you hooked.
formaldehyde is also used in cigs..which is embalming fluid.

I smoke and it is a bitch to get away from.I was 14 when I started and wish I never did.

Had a friend kick heroin and he said cigs were harder to put down...chew on that.