I hate my mum. Please give your opinion?

After you've read all this give an opinion on who you think is right and please no haters. My mum constantly goes on about how much of a disappointment I am and how I should just drop dead. She always insults me by saying things like,"Your so fat no wonder you have no friends", or " No one likes you because your very stupid and the bottom of your class". Also she's easily tempered and always hits me whenever she doesn't get her way. Just a few days ago she started pulling my hair and smashed me into a table and I now have a painful lump on my head. She even threatens to destroy my stuff that I paid lots of money for whenever I ask her something like ,"5 more minutes," so I have no choice but to beg her to stop. Sometimes I just think whats the point.