It's complicated. I recently reached out to him on Father's Day weekend after going no contact with him for 4 years. The gist of me going no contact: he's abusive and put my family through hell, my brother is disabled and almost died from COVID-19 and doctors weren't sure that he was going to pull through, he blamed it on my mom for not taking care of him. I told him to fuck off because I was tired of his BS. My mom literally put her life and career on hold for his care, and my father's care too. He suffers from TBI after being blown up in Iraq and basically only has half a brain so while his emotional issues can stem from that, he was also a major asshole before. He put us through hell and I'll keep it at that.
Anyway, he was so happy to hear from me. When I answered the phone he was in tears. My reasons for contacting him again were mostly because I was worried about his health, and I wanted to see if he was ok. I decided to put the sword down. I'm not sure if it's a mistake or not. I couldn't hold on to that anger anymore and I'm trying to practice forgiveness. I've changed, myself - I'm happily married, have a career, and I'm much happier than I was. He seemed to listen to me when we finally met up. He was kind of adorable not going to lie - he was so excited to see me that he bursted out the door of the restaurant to hug me.
Not to be an armchair psychologist but I think he suffers from BPD, even before his TBI affected his emotional regulation. He's extremely moody, he's abandoned us quite a few times, he has done risky behaviors, and he can't stand being rejected. He told me he was going crazy trying to contact me even though I blocked him, but his therapist said to let it go. During the time I broke off from him, he reached out to several family members to say he was sorry. I wanted him to say it to my face. Even though he did, I don't know whether to believe him or not. He likes to manipulate so I'm taking it with a grain of salt. When discussing my reasons for cutting him off, he tried to say "Well I don't remember that" (he will gaslight) but I put my foot down and said, "Well I do. I remember it exactly". I brought up the time when my brother was dying and he tried to shift the blame to my mom, but I quickly shut it down. My mom isn't perfect, and I've had to have these discussions with her too. She made an effort to change and our relationship is much better now - however, my dad doesn't really make much of an effort. I have low expectations of him.
He's still going to therapy, which I'm happy to hear. He seemed to shut up and listen to me when I would set my boundaries this time so maybe he learned something. He gave me an apology and said he wanted to move on. I told him I forgive him but I won't forget what he did to me. He's never apologized in his life so I don't think it's genuine. He's only texted me a few times since then. If he desperately wants to see me or have me in his life then he's going to have to make the effort himself. We'll see. I apologize for the wall of text. I'd like to write a book about him someday.