Make a list of all the reasons you can think of for no smoking?

It causes breathing problems, cancers, organ damage, changes your appearance for the worst, it smells bad, some of your friends may not want to be around you as much if they can't stand the smoke (like asthmatics), it can kill you, leaves a bad taste in your mouth, it costs a lot of money long term, and it is an addiction that is very hard to get rid of. The worst part is that you can also injure those around you in the same way with secondhand smoking.

Cancer is the main one for me, money, smokers cough, lungs, people around are 2nd hand smoking, allergies.

Yes you do , which is cool