AITA for telling my dad I’m not moving to another state with him and his family?

I’m a 15-year-old guy, and my parents got divorced when I was 7. My dad remarried three years ago, and his wife has two little kids from her previous relationship. She doesn’t have full custody, so the kids only visit her twice a year—sometimes even less.

When I’m at my dad’s place, I’ve always had to take care of myself. And when his wife’s kids are around, I’m expected to babysit them too. It’s usually three hours a day, Monday through Friday, whenever I’m there. I hate it, and my mom hates it for me too, but my dad never listened when she tried to talk to him about it.

Mom even brought it up in court once, but the judge didn’t think it was a big deal, saying siblings babysitting isn’t the worst thing ever. Except, they’re not my siblings. And back when this started, they weren’t even my stepsiblings yet. But I guess none of that mattered.

Over time, the kids got really attached to me. My dad started arguing with my mom because she wouldn’t make me go to his house during her custody time just to babysit. He acted like she was getting in the way of my "bond" with the kids. He didn’t seem to care if I wanted to be there or not.

Now my dad and his wife have decided to move to another state. They want me to come with them, but the judge already ruled that I wouldn’t have to move since I’ve lived here my whole life and it would take me away from my mom. However, the judge did say that if I wanted to go, they’d approve it, and my mom couldn’t stop me.

But I don’t want to move. I’ve told my dad this repeatedly. Every time I bring it up, he tries to convince me otherwise. He keeps saying I should think about the “bigger picture” and how I’m part of a larger family now. He says he’d miss me, and so would his stepkids. But honestly, it feels like he’s just upset about losing his free babysitter.

He also keeps bringing up how the move would give me access to a great school. He even tried to use that as leverage to get my mom to agree, but she doesn’t want to only see me every few months.

Now my dad is throwing a fit because they’re moving in a couple of weeks, and I’m still not budging. I’ve made up my mind—I’m not going.

AITA?