Is moving out the right thing to do?

I am the middle child even though I just two minutes older than my twin. I'm 18 and my parents have been treating me bad since I was little. They are much muuuch harder on me than my older brother and younger sister. I get really good grades at college, I got a good job offer, I drive well and take car of the cars, I get scholarships, I'm pretty well rounded. But, it's never good enough for them. I am blamed for my siblings' problems like I made them do it. I feel like I have to babysit my sister cause she does a lot of stupid stuff and my parents blame me for it. They also tell me how much I'm ruining my life because of my boyfriend because he isn't as great as they want him to be. I'm already making plans to move out because I've had enough of this. Years I've been mistreated and I don't want to sit back. I'm 18 and they still try to control every aspect of my life. (Cont.)