I think if it's going to be better for your health and well-being to sever family ties it is definitely something you need to seriously consider doing. I think you should get a therapist to talk it over with first though.
I only say this because I have severed ties with my father. You shouldn't underestimate the effect that severing a family tie can have on your mental and emotional health. You will experience a grief and a loss, not necessarily of the family you have, but of losing hope that you can ever have the family you wanted. There is no-one who can replace a parent, no matter how distant you originally were to your actual parent and no matter how close you feel to a new person. No one can ever fill that void. I don't think you realise the severity of that until you actually do it. And seeing as I have taken that action with my father, I can tell you that you will need good support through this because it will impact you in ways that you can imagine unless you've experienced it. You will need to talk to a therapist about it. It is different to grieving the loss of a family member through death in that it was a choice and in some ways there will be guilt associated with that choice, even if it is the right thing for you to do. You need to make sure you have adequate support to go through this course of action.
If it is what you need to do for your health and well-being, I wish you all the best.
I am not defined by my dissociation. It is part of my experience.
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