Let me get this straight - you're 13, smoking and drinking, against your father's wishes, and those of the law, and you can't quite figure out why he's upset with you? Ok, forget that, obviously his wants mean nothing. Bigger question is, why at the age of 13 do you want to go drinking and getting high? There's something wrong there, you shouldn't have to be looking for such "escapes" at that (or any) age. So I guess the question isn't so much why is dad angry, but why do you feel the need to do the things that make him that way?