i wish my parents got divorced

my whole life i’ve known that i have more of a broken house hold ( not in a physically abusive way) but i always had hope that it would pass but i’m very close to leaving my home and it never got better. My dad is a great man he’s a great dad but when he came to the u.s he became an alcoholic and it’s always been in the family. I’ve never enjoyed a birthday party cause it always ended in my dad drunk passed out and it’s traumatic to see my dad like that. My mom had put up with if for years for my siblings and as i’m now an older teenager i’m she relies on me but for my 16th birthday my dad spent the entire night yelling and arguing and i cried the entire night wishing my birthday away. I love my dad and i love my family, but i can’t help but wish my mom divorced my dad so that i don’t have to live like this. I have an older brother lives in another state and after he left i felt my life become so much harder and lonely but i don’t blame him. i’m happy he got away but i refuse to leave before i’m sure that my little brother and my mom will be okay.