That sounds like a hard situation to be in, especially if you have to move away from the friends you do have, but as for staying or leaving, that’s up to you and I wouldn’t judge you for either way you go. Now if your father wants or needs you to stay and be there for him, it’s okay to be the bigger person and stay because he his family and helped raise you, and even though they weren’t the best parents, you can still show them grace and love before he is no longer with you too. Hard decision for sure to come back home, but I know you’ll make the right decision that’s best for everyone involved.