[Faceman]

Just my 2c not a coherent argument:
Keep in mind that laws are not always about pragmatism and "what will work" but about what we want to convey to people.
While prohibition often seems the easy way out it's cutting down on freedom.
Laws for better safety may not work, because there are too little possibilities to enforce them, but they convey the message that "You can do anything, as long as you are responsible" which is what America is all about IMHO.