It may sound like a good idea but the world may be more difficult and unforgiving than you understand.

Your family doesn't have any excuses for the things they done to you. It sounds like they have belittled and invalidated you. Everyone would be hurt by that.

Youre 17 and probably don't have the resources to do it alone. Can you do something else like move in with someone in your family you trust like a grandma or sister?

Have you thought about trying to get some therapy? It may help you heal from some of your wounds. I had things happen in my childhood and it took its toll on me. Therapy has helped me deal with some of those issues.

Take care of your self and keep safe.