well i'd tell them to shove off, and weed has nothing to do with alcohol, and is not addictive. and you should look into whether alcoholism is heriditary, cause im not sure it is (though your parent may have been related to an inabilty to deal with having a kid at 16), but seriously, confront your parents about it, ask them there experiences with alcohol and drugs, and then explain to them how you where just "experimenting" to see what all the hype was about.