On Jan. 30, the Alabama state House of Representatives passed a bill to ban smoking in vehicles with any riders under the age of 19. If it becomes law, Alabama would be the ninth state to do so. This comes as the federal agency Housing and Urban Development is rolling out its nationwide ban on smoking in public housing, and just a few years after many states have outlawed smoking in beaches and public parks. This trend raises the question: Are we getting closer to prohibiting tobacco smoking altogether? And would that be such a bad thing?