Who cares if he smokes? Seriously, that is the least of my worries. The point is he doesn't support unending war in the middle-east, is socially progressive, and is one of the strongest democratic presidential contenders in years.
All this smoking stuff is just a smear campaign from the right, and it's not going to work. It's a cheap play, and just signifies the desperation republicans are feeling. Go Obama 08!