I feel if I stay that I will regret it but I worry about what will happen to him?

My husband and I have been married for a little over 2 years. We have been together for 8 years.  I met him when I was 22 and love him dearly.  We have a beautiful 10 month old baby girl. 

Although he is my best friends we have some serious problems.  For starters he is not a good provider.  This has always bothered me but lately I see what it is doing to me.  I’m stressed out all the time worried about bills and our future. I’m not a happy person.  I have been down right begging him to get another job because the one he has is a dead end.  A year before we got married he didn’t even work.  I had to cover all of the bills.  

I’m starting to resent him because I am always the one making any sacrifice.  He promised to quit smoking a year ago and still has not even though we can’t afford it. He just doesn’t try to better himself for his family.  I always thought he would pull himself together but never has.

Another thing is when I found out I was pregnant he thought that was a good time to tell me he never really wanted to have kids.  He said he was just doing it to make me happy.  That really took a lot of joy out of my pregnancy.

I went to school to have a better life but I am always being dragged down by his issues.  I guess it has always been this way and I accepted it but find it hard to now. The only happy thought these days are when I think about being on my own.

I feel if I stay that I will regret it but I worry about what will happen to him?