Clueless post of the week goes to you sir
It's not a conscious choice to become addicted...
I've smoked on nights out before, but i've never felt the need to smoke regularly. Some people smoke and get addicted and struggle to quit. Similarly i can drink on a night out and then go weeks without drinking, some people need to drink daily to not break down mentally. Generally the reasons for addiction are totally circumstantial or because they're going through bad times and need a method of coping, or sometimes it's in your genes.
Blaming addicts for being addicted to a substance is just wrong on so many levels. It helps nobody.
It's a reaction like yours which actually stops people from getting help because they feel ashamed of their addiction and scared to speak out about it. Addiction is a disease, not a choice.