Mine died of lung cancer after smoking his whole life (he was only a few years older than my parents are now). I was 8 and never really knew him because of his smoking. My mother smoked before having me, but quit a few months before becoming pregnant, which I am forever thankful for, both because I'm sure I'm healthier for it and because I know I won't lose her early the way she lost her father.
Needless to say, I've never been the least bit tempted to try it.