This is a tough situation. Your husband is depressed and getting more depressed. He's not even functioning. That's a long time to be not working and not really looking for work. He has fallen into being totally dependent on you for his material needs. He's gotten comfortable enough with that to have lost his incentive to find employment.

Him blowing up at you could conceivably be categorized as abuse. But what difference does it make what you call it? You don't like living with it. It sounds like you feel you have to have a reason to leave the marriage that will sound to other people like you had no choice. (Thus the poll at the top of the thread.) You don't.

Nowadays, feeling miserable in a marriage is widely recognized as a valid reason to end it. Having a spouse who doesn't work would make most people feel miserable. But you do sound awfully ambivalent.

In marriage ceremonies, typically, we vow to stay with one another through thick and thin, through sickness as well as health. But a marriage partner has an obligation to take care of their own health. Your husband is just stewing in resentment. You don't have a moral obligation to tolerate that for ever.