Sick of living with boyfriend's parents

I have been living with them for almost two years all they do is yell and scream at each other. The dad is a mean person that just judges and tell everyone off. The mum is a person that hates housework, complains and yells when no one does what she wants. They are very controlling of how me and my boyfriend act and always asking for money. I get sick and tried of there always 12 year old causing them to fight and Being an ungrateful brat that gets out of school almost every week for faking sick. I want to move out with my boyfriend but we don't have enough money and I only get a small amount of centrelink and his job doesn't give us much. I almost forgot his older brother always asks for money and is renting a place with his new girlfriend but can't afford anything and is always using our cars because his are broken in so many different ways. Should I just leave and do what is best for me and hope my boyfriend either comes or understands and still wants to be with me but in separate Houses.