What standards of safety do we wish to set? Is there a “right” to be protected even from our own foo

What standards of safety do we wish to set? Is there a “right” to be protected even from our own foolishness?
   A. Should government get out of the business of telling people what substances they can or can not put into their bodies?  (A strict “libertarian” stance.)
    (1) Is there a moral difference between “legalization” and “de-criminalization”?
    (2) Are there ethical or philosophical issues in drawing distinctions among the harm potential of alcohol, tobacco (in different forms), cocaine, amphetamines, caffeine, marijuana, LSD, heroin, other opiates (e.g. Oxycontin), sedatives, ecstasy (MDMA), etc.?
    (3) What about the whole field of restricting drugs or medicines to “doctor’s” prescriptions?
           (a) what are the economic advantages of making all drugs over-the-counter?

  B. How much should we regulate different types of foods and drugs? Should many of the alternative and herbal medicines that slip through the technical net of FDA requirements be brought under that process?  Or should we return to a “buyer beware” type of ethos?

  C. What about liability for accidents? Are some lawsuits becoming excessively lenient towards people doing dumb things, like getting drunk and laying down on the railroad tracks?

  D. How much “purity” can we afford in air pollution, ground pollution, water pollution, or food pollution standards? (There are some carcinogens in foods naturally that are present in far greater concentration than some so-called carcinogens from other “artificial” sources, but these latter must be reduced to almost impossibly low levels.