Welcome Sinboi! I'm so sorry your family is treating you this way. I agree with everything pale.emperor said. You do sound young, but you express yourself well even though English may be your second language.
Be the best son you can be. Stay in school. Go to college. One of my biggest regrets in life was not going to college. It truly limits your options in life. So many interesting job and business opportunities require higher education.
Also, do stop smoking. Both of my children stopped smoking within the last year, and I'm so happy for their freedom from the habit. They were both highly motivated to quit, and it was still so hard. Don't go down that road. Save the money you would have spent on cigarettes for your future.
I care about you!
Diane