I'm going to make an effort every day to slowly ensure I disappear from my family's lives as time moves forward.
Why do you want to distance yourself from your family?
I think they will be better off without me.
If you cut your family out of your life, it will hurt them. You should be always there for your family.
They don't care about me either. I've asked them to be there for me, but they haven't been. They don't listen to me anyway.
I understand why you feel that way, but I don't think cutting contact with them completely will help anything. It might be better if you talked with them about how you feel, so your relationship can improve.