Opening gambit: our children are lucky because they will live far longer than us.
Flanking manoeuvre: they should thank their lucky stars that the medical science has made all of this possible. By 'medical science', read doctor (as in 'Mengele').
Frontal assault: the MAN who is RESPONSIBLE for prolonging your children's lives LOVES to smoke. LOVES IT. In fact, the smokes - POSSIBLY - explain his EXTRAORDINARY
Dubious conclusion: Docs are TOPS. Docs love to SMOKE. Ciggies must be GREAT.
As a side note, I'd also like to draw attention to the fantabulous 'T-Zone' theory: FORGET THE EVIDENCE, your throat DOESN'T LIE. Even when you're bombarding it with carcinogens.