I'm Going Insane, I Just Need Someone To Talk To

Hi, I know I'm going insane, I'm trapped in this marriage. he is a lot older than me, he has no education, ugly and stupid. We were together for 7 yrs now, I accepted him only because I wanted to help out my family. my parents were in financial crisis, he offered to help me and we were together ever since. we have a 6 yr old son. for 7 yrs, we argued 5 days a week, I even chased him to the street just to argue with him in face, I know it's getting dangeous, but he managed to make me so mad everyday by talking to me nasty. the biggest reason I'm still with him is my son, but now he's older, he can see the visible conflict everyday. secondly, he gives me 13k cash each month, I have a 1M house on the mortgage , 1 bmw, 1 ford, and all other bills to pay. I live in a very expensive city, every month I have no savings. I used to be beautiful and sweet, now I'm becoming this rude and low class woman, I look depressed and angry. my parents are now depressed too, because they can see how unhappy I am, we never brought him to see any of our relatives, because it's a ashame for me to stay with a man like him. he once got drunk, and told me he argued with me on purpose, so I will get sick, and so busy arguing with him, and no other man will want me. I hate him with passion. but I don't have a job, I haven't worked for many years, I have resposibility to my son and my parents, it's a big financial burden. I'm not pround of my life, I feel so ashamed, I just need to talk to someone, or I'm worried I'm going insane. thank you for reading my story.