You can do that if you want, just watch out for the poison ivy.
Hey, you know what else we should do (since we are going off the deep end)... allow gay marriages, encourage abortion, take South Park off the air, empty the prisons (those criminals weren't violating the law, they were just exercising their right to kill, and do away with drunk driving laws (you should be able to drink wherever you want, no matter who you hurt).
You're getting in a snit now. The things you describe for the most part are criminal acts. Smoking is not a criminal act.