What should i do... and what do you think of this?

My parents are divorced, and they have been since i was three. Im 13 going on 14. My mom remarried to an alchoholic, immature, man, who doesnt get along with me. He treats my mom like crap and is nicer to his dog, than he is to me, who growls at me and almost bit me many times for just even talking to him. Me and him have had many problems before, and tonight just set me off. My four year old half brother pinched me for trying to show him how to use his new toy, and i said "Braden, next time you pinch me, your going on a time out!" and my step dad yells to me "DONT TALK TO HIM LIKE THAT! OR I WILL DO SOMETHING TO YOU!!!!!" and my mom started yelling at me too. I walked into my room, thinking about how im sick of things around here. My dad lives 150 miles away.my mom has no job so wont leave him. i know i have the option do live with my dad... what is your opinoin on this?