Why does my mother prefer her sons over her daughter?

I adopted a cat. I looked at it very carefully. but my brothers messed it up. They kept telling me how I should treat my cat, although they never cared for the cat's needs and never cared for the cat. My brothers said to me with a veterinarian friend, "If it does something bad, hit the cat. Don't worry, the cat only understands that way." Of course, the vet is also a man. Then I had a fight with my brothers for months. they hit my cat and infested him sickly. The reason is that the cat bites. The cat bites my brother when it doesn't want to be loved, and my brother wants to forcefully love it. When the cat bites my brother, my brother hits it. This is how he supposedly trains the cat. They say it's best to scare it. In addition, my brothers were also subjected to violence from my father when they were children.

Then I kept telling my parents. My father gave me the right, but my brothers continued to do it secretly from my father. my mother found my brothers right. I tried so hard to show my mother how much my brothers had hurt the cat. she understood a little. and she warned my brothers too. but my brothers lied again and tried to show that I was exaggerating. My patience ran out and I went crazy.

I took all the cat's supplies out of my room. My brothers were talking as if they knew a lot. "Okay, then you take care of the cat." I said. Then my mother started to take care of the cat. Of course, my brothers didn't care. At the end of the day, I had a fight with my mother.

My mother vomited anger at me for refusing to care for the cat and said she would give the cat to someone else. I told her I couldn't take care of the cat properly because of my older brothers. I said that I was tired of my brothers constantly mistreating the cat. but I am guilty. If I had listened to my brothers and had hit the cat, my mother would not even have been hostile to me. It was normal no matter what their son did, but when I made one mistake, I was a total bitch.

Now the cat will be given to someone else and I will leave the house, never to see my family again. When I told my mom I was going, she said she wanted me to go.

The problem is that my mother complains the most about the things my brothers and father do at home. the men in the house never care about her. I do the dishes for my mother, I sweep the houses, in short, I do everything to help my mother. What I do is very normal for her. but when my brother takes him somewhere in a car, she acts like his son did the hardest thing in the world for her. but most of all she complains about my brother. My brother is carelessly secretly spending my parents' money, leaving traces of urine in the toilet, doesn't turn off the lights when he leaves the house, doesn't bother cleaning anything in the house, he's 30 but doesn't pay any bills. but once a year, when something breaks, my brother fixes it. and he turns into superman in my mother's eyes.

My mother puts all her responsibilities on me because I am a girl. And if I don't someday I become a demon. She yells at me and talks about how tired she is. but it's the men at home that tire her the most.

I always explain this to my mom. I tell her that the men in the house use her. she sometimes gives me credit. she sometimes gets defensive. but tomorrow she starts to forget and blames all her problems on me.

In fact, when I went to primary school, a high school boy abused me. The boy who abused me was the son of my mother's friend. My mom saw it and said to me, "Don't try to mess with my friend, bitch". and she beat me along the way.

Damn it. she too has been victimized a lot by men and the men in the house are still victimizing her. But why does she always choose his sons? I can't understand anyway.