Tobacco Companies are doing just fine, Thank You very much! They simply changed their marketing targets - to the marginalized! So now smoking is entrenched in the poorest of the poor who can't access health care and to third world countries who don't have the laws to protect their citizens from money hungry Big Tobacco.
Stop blaming yourself! Yes, you smoked and it wasn't entirely your educated choice. I'm not making excuses - I'm looking at the macro picture so don't blast me please! A lot of it was simply about greed! But you can stop! You can get educated and you can prevent the travesty in your own Life!