Should i run away from home?

Well im 21years old and my parents are wat too strict i feel like im gonna die any day.Every night i cry in my bedroom feeling so depressed and lonley.My parents are pakistani however i waz born in london.I have no freinds anymore due to the fact that im not allowed to see anyone or go out anywhere.Im not allowed to go to my corner shop myself without my mum or sister going with me.Im not allowed out anywhere from morning till night not even for half hour if im allowed to go out thats only with my parents and that only when they feel like going out then i can go with them.Once i went out myself without there permission becuase i couldlt take just sitting at home on my *** 24/7 i went just for shopping no harm in that i came back home 3:00pm and my dad beat me up for going out myself.He called me a slut a u name it everything.My dad tells me the type of girls that go out them selves and have fun are tarts! wot the hell thats just ******* bullshit.No wonder my whole family has gone mad.I feel like killing myself some dayz becuase everyone is enjoying themselfes outside going places having fun and look at me.My dad beats me up if i jst step out the house i get beaten up if i talk on phone or if i stay on my laptop till 10 or 11 talking with my freinds and i have to be in bed by 9:00 how can i live like this!!!I have to get married to whoever they like.My dad tells me if i even think of stepping out the house hell kill me thats why im scared to even say anything against him i feel like ive become a looser i dont have a life anything just drink and sleep.And if i leave im scared if they try to track me down and on top of that ill be disowned by whole family is that a risk to take either i will leave home have freedom and live my own life and make something of myself or stay with my family and and do as they say till i get married. im stuck!!! what more worth it?