What do I do when I have so much hate for my husband but I'm afraid to leave the financial security?

I absolutely hate my husband. We met and married in one year and we both were 30. We have been married for 6 years this August and we don't get along at all. I want children and he doesn't, he's very selfish so I always go along with what ever he wants hoping he'll be happy and then he'll want to return the jester and do something I want. That strategy didn't work. He controls as much as he can in our lives. However, I will admit it's gotten a little better over the past few years. He's a spoiled jerk who has no problem saying "I'm sorry" and "will you forgive me" but he also has no problem continuing the behavior. I've threatened him with divorce many times and always fold in the end but I can't take much more!