Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.
I know women who have terrible fathers, yet they cling to the relationship. The best I can describe it is that they are clinging to what could be, what they want to be while the rest of the world sees them clinging to a terrible person.
Taking the high road is the only path that will give you peace in the long run. (And this path is independent on taking him to court for child payment. Which, BTW, I think you should do based on what little I know about your situation.) But it will be very hard.
Gentle hugs