Gaslighting myself

So I’m 27 I just managed to move into my first apartment about two weeks ago. A month before I moved out me and my mother got into an argument, and she took it upon herself to grab my things that I had packed and throw them onto the front porch. She also threatened to call the police on me all because I refused to clean the bathroom that I barely used as I was gone to work from 8 AM to 8 PM M-F. I’m still on the fence about going no contact with her, my father, whom she is still married to, and refuses to divorce even though they hate each other- as well as my older sister. she’s the oldest sibling, a year older than me, but for most of our childhood, she was just an absolute evil, horrible older sister and I can understand that that was caused by our parents but I had sympathy for all our other younger siblings and never treated them like that because I knew they were already treated like that by our parents.

I also want to go no contact with my grandparents that are still alive any uncles on both sides and any other relatives on both sides. I just feel like they knew how insane my father was and how useless my mother was, and did nothing so I honestly want nothing to do with them. 

My father was physically and emotionally and verbally abusive when I was a child and my mother was emotionally and verbally abusive. They were both neglectful. I remember having major health issues that were just completely ignored , as well as my siblings. I remember multiple times being insulted or shamed because I was a heavier girl by my mother, my father and my older sister, too many times to count. I remember an instance where I got a couple F’s and my mom told me to give her my phone and I didn’t want to so my father told me to go to my room and as he told me he pushed me down the stairs (my room that I shared with my sisters was in the basement) and I tripped and fell and sliced my thigh open on one of my sister’s doll houses When I noticed it, I went to the bathroom and kind of started freaking out, and my mom just stood in the doorway, telling me to calm down. That’s one of many instances that happened in my childhood. I just don’t feel I have never felt a mother-daughter connection or a father daughter connection with either of them. We’ve had nice moments but I remember I went away to school for a year and I did not miss them for a single second I just feel like the only thing now that I would need from them if I needed anything at all, was the illusion of having an actual mom and dad.

I only want to have contact with my younger siblings honestly. I feel like I’m being extra by going no contact but at the same time I feel like my parents and older sister have shown me time and time again that they genuinely just don’t like me and some of the things that they’ve done… if you were to do that to a friend or a person that wasn’t related to you they would never speak to you again right after you did it so the fact that I’m 27 and only just now doing this seems kind of insane to me I just Wanna know if anyone thinks I’m being extra or not I don’t know? I’m sorry if this is kinda like a ramble I just really need someone else’s input.