Unfortunately, the reality is that if you are financially dependent, these situations can arise. Cases like this used to be much more common when women had limited chances to work. It sounds like he is taking his frustrations about his debts and other issues out on you because he knows you are stuck in the situation.

A lot of people that are disabled manage to work at least part time, including many on this forum. Have you looked into any programs that help disabled people find jobs? Maybe there are some options out there you haven't thought of.