debate preparation

Tomorrow I am doing a debate presentation.
So, today I am preparing for the presentation. The Topic I and my partner are debating is “Smoking should be banned in all public places”.
My personal opinion is on the side of for, but in this debate I am on the side of against.
Smokers pay mach tax because of high rate tax on cigarettes. In London, % of the price is the tax. So smokers contribute our society so much.
In this way, I support smokers.
In spite of so hard persecution, smokers never give up smoking. I am astonished by this fact.