>I don't want my kids being turned into stoners [and] the law should be on MY side
Should it? It isn't on your side if they want to (as consenting adults): ride a motorcycle, drink alcohol, go heliskiing, visit a strip club, buy condoms, or go bungie jumping, for example.
Should all potentially harmful activities of any kind be criminalized as well, because you have kids and the law should be on your side?