During my periods of Melancholia (Caused by SAD, thus correctable with light and diet to a degree) Everything becomes too much work or too hard.
While for you going to the doctor is a matter of jumping into a car and going - for him there is all of the paper work, all of the talking, the sitting in a waiting room, the long difficult walk to the car, the having to get up, get dressed, the putting on the happy face for every single stranger along the way, the need to bathe, shave, whatever.... Each step of this trip is exhaustive.
Then the real horror kicks in because you know the doctor won't be able to do anything, and you will have expended this huge amount of time and energy for nothing.
That is how depression works, it makes insignificant hills into the alps which can only be crossed with rope, hammers and the like. Something as small as getting out of bed feels like it burns up half of your energy reserves.
http://www.rd.com/advice/relationships/h...ed-spouse/ might give you some minor help. It may actually make a few things clearer for you.
Yeah its women and man marriage, but you are part of a couple, which is really a marriage (Not recognized, or supported by the State/Church/People around you as marriage, but marriage nonetheless).
First you must understand you can't 'save him'. No matter how much you may want to, no matter how much he may want you to be his savior. There is no 'saving' in this. There is coping, there is working around it there is compromising with the depression. There is no 'saving' nor a cure.
You may be able to make is slightly easier, if you set the appointment, do the driving basically take as many of the steps you can for him. But he is still going to look at the steps that are left as being 'too big'. That is the depression at work.
As for not wanting to take drugs - I so get that. However he is going to have to balance out that desire to not dope up against the needs and those won't be known until he sees Doctor.
Yes a therapist may help - a lot. give him someone to rant at/bounce things off of while the therapist hands him customized tools to help him to cope with the plethora of little things depression means and will mean just for him.
Push him - a little.
Very little at first. Is he the type that feels obliged to go to the doctor if the appointment is made? If so then make the appointment and he will go - reluctantly.
And since you are part of this 'us' thing which also includes depression, I would strongly suggest you seek help for yourself.
I would say 'be understanding' but since you are not depressed you can't really understand what depression does. But you can be supportive - a little, if you study up and get some perspective on what depression can do and hopefully in time he will let you in on what his depression does and feels like for him so you can learn how to meet its particular needs and support him through those.