Husband won't support baby and I

Since my son was born 4 months ago, I've lived with my mother. It's more comfortable here than where my husband is living (with a family friend). I visit my husband a few times a month. Recently, I stayed with him for 2 weeks. A sort of "test run" to see how it'd be to live there with him (I thought by now he'd have a better job and a place of our own, but that hasn't happened). It was horrible. There is no shower, no food, and our car just hot repo'd so there's no transportation. Plus, he treats me horribly. No connection, mean, critical, unappreciative. I decided to go back to my mom's; the best place for my child and myself. I understand sacrifice, but it's just too much for me to handle. I also understand that he may feel abandoned, but I have to do what's best. I recently just asked my husband for money for diapers and he refused. He said that since I chose to not live with him, he doesn't see why he should have to support either one of us. He can go out and buy half gallons of alcohol twice a week, go to bars frequently, buy electronics,etc. But can't buy his baby diapers?! Wow. I just don't even know what to say to that. I'm sad, mad, disappointed and heartbroken. Being a husband and father is a privelage, not a chore. His love shouldn't be conditional but clearly is. Should I just buck up and live with him so I can have a husband and a father for my child?