Is it justified for me to want to move out of my parents house?

I am tired. I am so tired of living with my father (the rest of my family is OK). He drinks himself to the point of oblivion. He doesn’t know what’s going on around him and we have to call the ambulance to take him away because he’s choking on his own vomit. He is unwilling to be helped. He provides for me and my family and we lead a excessively comfortable life. However he rarely spends time with us anymore. He is verbally abusive and used to be physically abusive towards me (and is sometimes physically abusive towards my mother). This is a bit of rhetorical question, I guess. I can’t /really/ move out because I dont really have anymore to go. I just want to know if its justified. That I’m not being a selfish person.

I’m 17 (I know this is going to be a question)

I have previously asked what I can do to help and I’ve seen a school counselor but nothing has really changed.

I’ve begged my mother to leave him but she’s very defensive.

* I apologize if I’ve made any errors in this question. I’m really irritated and a bit shaky after the events of tonight.