Also eats up money and time, smells up clothes and breath, making it harder to find gainful employment, thereby adding to the stress that turned them towards smoking. Vicious cycle.
I had someone ask me for money for cigarettes once.
I took out a dollar from my wallet and set it on fire.
What wide eyes I created in the asker; but he got the message and the ashes.
I suspect the similar is said of overweight people who now have health risks well beyond smokers..