Just a scenario I was thinking about today. It may not be realistic, but imagine it was the case. I don't smoke, because it negatively impacts health.
However, if smoking..
1) didn't have any negative health impacts,
2) was more socially acceptable then it is today,
3) cheaper then it is today,
...but still...
4) produced the 'buzz' that you get from smoking,
5) still produced the same smell on your breath and clothes,
...would you smoke and why or why not?
Remember, it may not be realistic, but just imagine it was the case.