Ferret, you gotta do what you gotta do man. Fuck the rest. Be it doctors, the police, regardless, people will always TRY to put you down, but fuck them. With all due respect your dad doesn't know what hes talking about if hes putting YOU down over weed whilst he does coke? As long as you know and feel you are doing the right thing, it shouldn't matter what people think of you.

Good luck bud