"Therapists have never helped, and I see no point talking to a doctor about my feelings about my life."
I'm not sure I agree. I have a very good friend who went into a deep depression a few years ago. She went to the doctors and they prescribed something. She says it didn't solve anything itself (as you say, the patient needs to do that themselves), but it did take the edge off the feelings of hopelessness and allow her to start healing and dealing with the issues.