What am I to do? Marriage issues??!?

I am married to my husband for 4 years now, and things are not exactly blooming. We married out of love, however ever since we got officially together it seems everything changed. The thing you need to know is that he comes from a dysfunctional family, meaning his father is an alcoholic, they are poor, he has has not finished his university degree, etc. On the other hand, my family and I are a completely different story. I look up to my parents, as how should a marriage suppose to be, and I always thought I'd end up like that. I never missed anything during my childhood, I finished university, and I am very successful in my career. I am very friendly, outgoing, optimistic and generally happy person. But, the thing is I do not feel like myself with him anymore. I try to keep the balance, but it just doesn't feel right when it is only me trying. He is very cold, he does not give me any attention, or whatsoever. We do not even communicate. I want to have children, but I am not sure anymore about him. We fight constantly, it seems like he is always defensive, impulsive....and he doesn't really seems like he cares, or loves me. And the tension has grown so much, that I have lost the will to try anymore, and the worst thing is that I have become indifferent. I still try to talk and work things out, but there is no feedback, and I feel like I live alone, and I am much better off when I am alone, or with my friends and family. It doesn't seem right, and I do not want to give up, but I guess that marriage is not suppose to be like this. I know he feels and thinks less of him, because of my background, social, financial or educational, but the thing is I never let him or have done anything to provoke that. It is just he feels.

What am I to do now? I do not know how to deal with him, or talk anymore. He doesn't want to talk about anything, when it comes to problems, he would rather sleep them away, or play games....or do nothing. And he has very negative influence on me.....because he is like constantly in bad mood. I sometimes think...what if he becomes like his father, it is my constant fear, and I feel like he has taken the absolute worse characteristics from his parents.

Please tell me how to reach him, how to talk to him, make him notice me as he used to, and improve things for us, so we can move forward with our lives, and start a family.