Spouse hiding something?

Hi, I've been married for a long time. My mate has always had a hard time keeping a job. Consequently, I'm the only one working right now. I take care of all bill, my home, child, etc. We have had some bad fights because of him smoking pot (he's in his 30's) and not helping me clean house. I come home so tired and he asks me what's for dinner.. then when he goes to the next room, I find DVDs and get upset that he's spending time on this but doesn't sleep in the bed with me anymore. He sleeps on the couch every night (says because he's watching tv.) my child and I hear him laughing and ask him to lower it. He gets stoned, eats all the snacks and my daughter gets upset. He doesn't spend any time with her doing homework, seems resentful of me. We have one car and I use it for work and school--he says I should get a ride to work so he can look for a job but when I leave the car, he goes fishing and golfing. I'm so stressed and tired. maybe he wants to be rid of me?? What do I do?