For parents, adults (?)

I am not a parent or an adult yet. I am a teenager. this is going to be a long one. I really want to become a parent when I am older but I am having trouble with my own parents right now. My mum and Dad raise me with the idea that the world is going to be cold and won't care a single bit about me and how I feel. And they insist on showing me that right now. My siblings seem to listen to this, but I don't agree with it. I don't like the way they think. Here is what I think: my mom and dad had hard lives because of decisions they made and try to make me believe that's how the world really is, but my world doesn't have to be like that. I know how my parents lives were before they had kids and they're not afraid to show me how bad it was, almost like they're proud. My parents had kids when they were 22 years old. My dad was in a gang and did drugs starting when he was thirteen. My moms says she was in a gang aswell and almost flaunts that she used to do drugs. She still hangs around with her cousins and sometimes she gets drunk when I tell her not to. My dad still did drugs when I was born and stopped about two years after, when my sister was born. My parents have specifically been hard on me, and I notice it. They cherish my sister and my three other siblings way more than me. No matter how hard I try. They don't like me because I correct their bad behavior a lot. My dad had threatened to leave my family and whenever we settle down, he says that my attitude is tearing our family apart. But all I ever did was stand up for myself and recognize wrong. My mom ignores me a lot. She is always on her phone and she dosent respond to me, she also doesn't respond to her text messages. She is very irresponsible and I've seen her swipe away my messages. My parents think they are always right because they are older. My dad threatens, saying he should probably punch me in my face or that he should throw away everything I like and love just so I can get my act together. My mom and dad argue in front of me and my siblings and I hear them say that before they even got married they had been threatening to leave eachother. My parents did not care to heal before they had kids. My dad sexualizes my mom in front of me and my siblings. A lot of what I hear is traumatizing, and it makes me cry at night. I tell my parents I have sleeping problems, that I am bored and feel like I want to tear off my skin, that I feel sick to my stomach, and they ignore it or get annoyed. I don't have any friends in my life or anyone close and I am really raising myself. I really do talk to my mom and dad but they think they are right no matter what, because I am just a teenager. And I feel bad telling them they are wrong because I know my dad would probably leave, and I can't do that to my siblings. He works everyday, but that doesn't give him the right to take that out on me. All I ever want from my parents is love and solace. I want to know, to every adult and parent reading this, is the world really a horrible place or did my parents just have it bad? Does the world not really care about you? Is everyone mean? Is there no joy at all? Do I need to experience the real world at my teen age or do I just need solace right now? Do you think my parents are doing it right? Do you agree?