Aitj for considering cutting contact with my family in the future?

My dad isn't that bad but he affects me a lot, I've started to just become a problem for him, he even told me that when I asked him for something to eat when it was a bit late at night, he's also told me to fuck myself, he yells at me a lot, hates my best friend, neglects me occasionally and though he's not abusive, he guilt trips me, when I had a bad morning because he yelled at me and I responded back, he'd go on a short rant saying that he has feelings too and that it's not nice, never once considering how I feel when he yells at me all the time, my older sister is bad too, she yells at me, ignores me, so obviously hates me and when we're arguing, she cuts me off and mimics what I say mockingly, she's so irritating and I hate living with her, I've already started to avoid talking to her, I don't show her as much attention as I used too because she hates me, my younger sister is the only one I have a good relationship with and nobody has called me a jerk but this is just me worrying, I worry that cutting contact would be a bad thing because my dad got me out of foster care and took care of me for years and my older sister is still my sister, I just feel guilty about it and I don't know what to decide, I need an honest opinion of if I am a jerk for considering it