There's really not much else to say. Cigarettes are proven to kill without fail if used over a lifetime. They're not necessary to our society in any way. What's the difference between a confirmed poison and currently illegal amphetamine, opiate or flower that only kill in large doses (or don't kill at all)?
No stats here, no cliche political arguments about flowers growing out of the ground. Just a rude but necessary question: how can our federal drug policy be so insulting to the citizens of the United States of America? Why should I trust a government that lets me kill myself at any gas station or quick stop?