As reasons to self medicate go, listening to Mitt Romney is a pretty good one.
I used to smoke exorbitant amounts. I Dealt it, shared it, lived it. In music school I got to a point where the synthetic high fostered side effects that legitimately impeded my overall ability. Not to defend Romney, but I can relate to him. But really, who cares if you smoke, as long as you aren't hurting anyone else. Though to argue my own point above, there is a point to be made outside of his rudimentary argument - albeit not on the same level of self-destruction as heroin... when someone partakes on their own volition, and continues to the point where they are no longer functioning, and then become a debt to society - compromising the freedom of those around them - is it not fair to mandate laws that protect the rights of those who value other things with their time? This is a chicken vs egg argument. Coffee.