Depression Supporters Support Group
This community is dedicated to spouses, children, relatives, co-workers and others who are actively supporting someone suffering from depression or other serious mental illness. Depression can bring about intense sadness, melancholia or despair that has advanced to the point of being disruptive, which can have a grave impact on the ability of others trying to help.
Maybe try marriage counseling? At least that would give you a safe place (after a few sessions) to ask him if he enjoys being a husband/parent and explore how he feels and why.