I'm 22 and live with a MEXICAN MACHO?

i've been with XXXXX he is 10 years older. we have been living together for about five years. and i feel we are going no were. i love him... that is why im with him. i drooped out of college and had a child with him. i cant work cant go to school or have friends.. i now its not ok but i allow it because i love him.. i have everything i need a car a house nice things but deep in side i feel i have nothing. every one around me say im lucky. because i don't have work, i have a nice car......... but like i said i feel miserable and i think i would feel worse if i wasn't with him. i cook, clan, do everything around the house for me my son my boyfriends daughter witch is eight (forgot he was married for 6 years and has a daughter) and i also take car of his mother... i don't understand he is always under a lot of stress his always , in a bad mood, upset about everything and screams at my son something that always leads to a big fight.. because i dint allow him to yell at my son he is only 2.. what should i do?? stay or ??????????? go