Planning on moving out on my own and leaving my brother behind to fend for himself. Is this wrong?

Hello, I've been living in shared apartment for 5 years now and one of my roommates is my brother. But I this past 5 years I have grown disdain and resentment towards him.

He's never supported in my long journey to achieve my dream job saying that I should give up and go work somewhere else like McDonalds or be a janitor or a job picking up animal droppings in the park. I told him and everyone else "No, I can't and won't see myself doing anything else" I kept paying the rent by doing freelance computer jobs. For more context, He is a graphic designer major in college and he works for Amazon delivery from a job that the government got him in a job placement program. where he makes less than minimum wage. I on the other hand wants more and aimed higher, I applied for jobs the right way and though it took 4 years, I finally got my dream job.

He tries to physically harm me whenever he loses an argument. Not a fan of his personal disgusting habits.

Pretty much I'm tried of this roommate stuff tbh. I'm tried of sharing my space with a revolving door of strangers, I'm tired of being told what to do when I want to relax from work. But the problem is when I tell people this, they say no, "Don't leave him behind" "You guys should stick together" etc But he brags about his Amazon job even though he makes money to rent a shared room but I make enough to get a 2 bedroom but I only want one. So I figured he'll be fine.