Need one's advice

Hey all,
In the past few months, I've struck upon some pretty nasty bumps in the road as far as friends and family go. Yes, I'm still living at home with my parents and younger brother, as im in the midst of trying to get a college degree and also starting up my own company at the same time. I've been smoking for about three years now and about three weeks ago, I finally had the balls to open up to my mother about who i am, and why i make the choices i do in my life.(im holding back on telling my dad due to the fact that he is dealing with his own problems in life that are work/economically related which has left him severely depressed). My mother (who is the head of my brothers high school healthy teen choices board), didnt take the news too well because of the fact that i have told her in the past that i dont smoke pot. Her first reaction was "OMG! you are an addict and need help." within the three weeks, Ive talked to her factually about marijuana and the history behind it. Yes, she did ease up but still doesn't see a point to it in my life recreation-ally, and thinks that we need to go to family counseling???WTF??? My little brother who now also knows i smoke on a regular basis. is even having a harder time which i can understand because of his adolescent age. It's the ignorance of my mother and brother that are leaving me with un-thought explanations as to why i smoke and why its not a big deal in my life and shouldn't be made one. I need some advice to help me and my family overcome what i hope will be a very small bump in my life.
Thanks...