smoke

Smoking causes you to age prematurely and gives you wrinkles. Many attractive women find it a put off. It costs a lot of money that you could spend on something useful like make-up or a new videogame. It leaves stains on your fingernails.

What other excuses can we give young people to quit or not to start?

Certainly telling them that it's bad for their health isn't convincing. After all they are gonna live forever. Like James Dean and the Cowboy riding into the sunset.