Hi emma I'm sorry you are in this situation. He is absolutely emotionally abusive! Whether he's depressed or not, his behavior is terrible. It doesn't seem like his depression is so serious that it effects his love of motorcycles one bit. His threatening to kill himself can be a form of emotional blackmail...his goals being sympathy, an excuse for him to continue to be lazy, just wanting you to stop "nagging", keep financially supporting him, etc.
You deserve better emma