I'm starting to hate my family...what should I do (very long, be warned!)?

Well, if you are eighteen you might try to begin a new life. A big start would be getting a house of your own. If you got problem with the money, get a part-time job, unless you ended high school. There are lots of ways for you to socialise. Something like going to some sport lessons. The opportunities are endless since you are 18, but you need to take it slowly. I hope that my tips will help. Good luck in life!