OP needs to seriously ask himself if, after dropping out of high school and college, the issues "bringing him down" will magically disappear with a change of address. At 21, having no education, no trade and no willingness to swap four years in the military for a free college education makes it sound like you might not be as motivated as you think. With no plan your post smells more of desperation.
That right there is some damn good advice.
OP, you need to ask yourself that question and be totally honest with yourself. I've tried running away from my problems and guess what? It didn't work. Unless you learn to identify what your problems are and how they effect you and deal with them, then it doesn't matter how far the Jet can fly; you'll take your baggage with you.
I didn't grow up in the best environment, so I can relate to why you'd want to get out; but trust me, with that "don't care, just need out." mind set and no real plan... Yeah, I see than ending baaaaad. As others have mentioned, if you are desperate to get out but the military is not an option then I ask you this:
How bad is your life there
REALLY, and how much better are you being than your parents?
I'm just being straight with you, so don't take this as being a snob. You really have to want something in this life to get it, and letting yourself think that it's someone else's fault that you can't obtain it is
NO EXCUSE. Are they holding you gunpoint to keep you from getting a better job or a diploma? What's stopping you right now from bettering your life? I don't know what your current situation is, it may actuality be that the only practical option is getting out of there; if it’s actually that bad.
You have $2k in your pocket, and I'm assuming you have a computer and internet? Then go buy study guides for whatever the equivalent of a GED is and study your ass off using the tools you have; hell, the stuff on the internet may be more than enough to teach you what you need to know since you’ve already done a bit of college. Getting some sort of education cert will go a long way to making your life better; I have a GED and I'm working a pretty good job right now considering my lack of college degree because I always worked towards a better life.
Whatever you decide to do, make sure you are doing it for the right reasons; otherwise, you may find that you got what you wanted but it didn't make you any more happy.