I literally cannot stand my brother, is that normal?

So my half brother ran off from home because "he didnt want my mom using his car" and went to our dads, (my real dad his unbiological dad. now, two and a half years later, after going to jail from D.U.I, drugs, and stealing... he is living back at my moms house with no job, and 400 volunteer hours to catch up with. He doesnt have a car either. He always tries to act in control of everything even though he walked out on us and etc etc. my mom always takes his side on everything, even when he is teasing me. im afraid that hes is taking my childhood away because im never in a good mood around him. I feel like im not going to be able to drive until i get a job because my mom will buy him one first even though he wrecked both of his cars. My mom buys him cigarrettes and wastes her money on him but whenever i need something for school its guilt trip on top of eachother. everything was 100000x better with him out of my life, and now that hes back i just dont want to be here. My mom is always mean to me and i just want to trade lives with someone. it just sucks. And the other thing that annoys me is my mom is always near him. when i get home from my dads, when i get home from school, eEVERYTHING. oH, and if something ever happens to my mom, my brother gets to keep all of the money we inherit, anddecides what to do with it. HE IS A LIAR, SNEAK, and all he cares about is himself. he breaks all of my stuff and laughs about it. WHAT SHOULD I DO?????