My mother is someone who wants to be the “cool mom” and often gangs up on me with my brother and his friend who lives with us. For example, my minor brother drinks all the time and openly talks about it, when I told him not to drink  and drive he got angry and began yelling about how I act like a second mother and just need to shut up, my mom then will get involved and tell me to be quiet because I’m acting like a “pretentious bitch”. Anything can set them off, I admit, yes sometimes I say things that I probably shouldn’t, but sometimes I’ll just say I don’t like a tv character and they will start. On top of this my brother is extremely disrespectful in every regard, especially to my mom, but when he’s yelling at her she sits there but when he leaves she takes it out on me and gets angry about mundane things I do that didn’t rectify the situation. At this point I’m old enough to get my own apartment and everyday I get closer to getting one in a different city and not looking back. Part of me feels bad but I just don’t care I’m the long run, I want to leave and not talk to them or visit them. I’m tired of being an outsider, however when I bring this up people tell me that I shouldn’t do things like that to my mother and that I should change my attitude 
So reddit, AITA?