Why do i hate my parents so much?

i can't help hating them...i'm 20 years old and the last 20 years i have been controlled by them...when i was a child i answered a question wrong in my exam and my mother punished me by throwing me against the wall and my dad beat me with the belt..it was the begining of my hate for them... they beat me till i was 13 which they did to discipline me...i was always a rebel and wanted to do things as i like..my parents always wanted me to top the class so i was always studying...they liked it that way...but i wanted to be like the other girls in my class who enjoyed their life and their parents never beat them...when i entered high school i wanted to do a part-time job which they refused to let me do it and said that i was a spoilt child and my new friends are bad influence on me.I have very low self esteem.My mother loves money a lot because she was poor when she was young and was afraid of being poor again.So she always taught me and my sister that money is the solution for every problem.She is a very calculative woman and always reminds me that i am living in her house and eating her food.This thing always hurts me.Ever since i was 10 the only thing i ever wanted was to get out of that place and so i studied vigorously so that i would get a good job someday and leave them forever.I wanted to pursue arts but she discouraged me and forced me take up engineering which i hate to the core.Ever since then my hatred has magnified and i always insult her when she is around me.She always tells my relatives and friends that i hurt her...always crying on the phone ...which irritates me...she can't keep anything private...she reads my personal diary...calls up my friends... checks my messages...always suspects me by saying i have a boyfriend...and jokes about me with my sister..as a result i always lock myself in my room..I told her many times i don't like what she doing but she says she is doing the right thing.My parents have given up on me for the last 2 years and don't argue or force me but i just can't forget what they did to me.I told her that i hate her even though i am aware she loves me...i just can't love her no matter what she does...i can't even sit in the same room she is no matter how hard i try...is this feeling normal?