My husband is one of many Kiwis who suffer from depression. In the early days of our marriage we didn’t know what was wrong and several times I nearly left him. But thanks to a great doctor and antidepressants our lives are much easier.
Depression is a tough thing to deal with as a partner. You need to be supportive and often it’s the partner who notices changes first and therefore is very valuable. I know going off medication is very common with depressed people and I feel for your husband wanting to live without drugs, but it seems to me he might be in denial about his condition.