OneDayillBeFree, I really feel for you! As someone also stuck in with little chance of being able to break free I understand where you're coming from. That feeling of being trapped with no way out is consuming, in my own case is making me become very depressed. I'm in my later years and leaving a husband, children, grandchildren just isn't an option for me. I have my husband who I can talk to even though he doesn't understand, at least he hasn't kicked me out or ratted on me.
I guess you are young as you're still with parents. Could you find a friend to stay with until you get a job and find a place of your own? Talk to your friends outside if you have any. Failing that, is there some kind of counsellor you could go to, to give you some advice. The son of a friend of mine orchestrated his escape for months before he went, no one had a clue how he really felt. But he made sure he had everything in place before he left. Of course it came as a shock to his family and they couldn't understand why he never spoke of it. As far as I know he's doing well. If you feel like killing yourself if you stay then that's reason enough to go as soon as you can but if you do, don't leave everything to chance. Make sure you have somewhere to go and make sure you have some way to earn some money. If you are able to continue in this farce then carry on until you've saved enough to enable you to get away.
I really really hope it all works out for you!