Why do people smoke even they know it's bad for you?

* Some people smoke because they find it calms them down, helps them to not be so stressed, worried, angry, etc * Other people smoke because they are only addicted, they may not want to smoke but because they have been smoking for a long time they feel they cannot give up and only smoke because of the addiction * Also people smoke because maybe they had been peer pressured into it when they was younger and now just have that addiction to smoke For me when i started smoking it was because i was drunk and with all my friends in a park who did smoke, so i thought, why not, and ever since that day i have had a cigarette everyday in my life ever since.