Hi Itzposzible

You've clearly been through a lot and your parents' behavior has unfortunately affected you very much. I am very glad though that you are now able to see their behavior for what it is, abuse, and are now working on healing yourself.
You are currently awaiting the start of therapy. Dealing with suicidal ideation isn't easy. Perhaps you can benefit from our thread about dealing with automatic negative thoughts:
Automatic negative thoughts: Talking back to your inner critic/negative voiceWe also have a thread about dealing with trauma that I think you might find helpful:
Dealing with trauma: PTSD, C-PTSD and emotional flashbacksNow to your question:
But my question is Why oh why do I miss my abuser?
Although you now realize that the way you were treated in fact constitutes abuse, this was still all you knew and were used to. Now that you are attempting to break free from this cycle of dysfunction, I think it makes sense that on some level you 'miss' it, not necessarily because you really liked it but because it was always like that and it might feel very strange and scary to live life another way.
You mention being deeply isolated. I am glad that you are reaching out for support here and hope this will help ease this sense of isolation. Being the child of a disordered parent can indeed be a very isolating experience and it can really help then to interact with people who've had similar experiences.
Take care and welcome to bpdfamily