How do u get out of a relationship when u have a child together?

My bf and I have been together for 8yrs. We lived together for 3 of them and broke up. Then we were off and on. Now we have a child together and I moved back in last year. Things havent been great and it seems like its just gotten worse when the baby arrived. He doesnt help me in the ways I want him to with the baby and he isnt affection with me or attentive to my feelings. It seems like its all about him. Everything from what I cook, what I buy and . He never asks me what I would like or ask me what I want at the store when he goes out, but always calls me for me to pick him up what he wants. He doesn't care for my family and never wants to come around. I always seem like I have to beg him to go over there with me and when we do its seperate. He has to have a time to go over there, he just can't go with me and the baby. My family doesn't care for him much and some have expressed that to me. I wish I had broken it off for good before I became pregnant but now we have a wonderful child together. I just can't take anymore of his ways. Im always doing stuff with and for his family which he likes but, he doesn't for mine. I want to get out of this relationship but, I dont want to take the baby from him. He loves the baby I know, but sometimes I believe that things would be better for all of us for me to move on. I don't want our child growing up in an unloving home and me being miserable for the rest of my life. I use to think I wanted to marry him but now I just can't stand the thought of it. What do I do? I sometimes think I know what I should do, but Im just wanting somemore advice on the matter. Help!