Ugh. Thyroid issues are so complex. When they say you have "subclinical hypothyroidism", that means mild hypothyroidism without symptoms. That doesn't sound like it applies to you. Can you find another doctor who will, on a trial basis, prescribe thyroid meds for you to see if it helps? Endocrine issues are an inexact science, and considering how much you're suffering, it seems a little flexibility on the part of the doctors is in order. I'd google endocrinologists, and see if you can find someone who is willing to try to help out. Best wishes - fatigue is awful.
I have no idea about the disease you have, but the thyroid issue isn't a disease per se. The Tsh test is mostly about your adrenals, and the T4 and T3 and how well they convert to one another is the thyroid test. Apparently, you don't qualify as having thyroid disease, and if they put you on medication for it your thyroid will die. They're trying to prevent that. There are ways of trying to deal with a sub-optimal thyroid without killing it off and you should discuss this both with your specialist and someone who practices natural medicine or complementary medicine, as there are herbs that some find effective for this. As for the rest, wish I could help, but can't. Did they test you for nutrient levels? Did they test you for whether you have a genetic problem with B vitamins? Becoming an alcoholic has more to do with depression, and it's up to you. Again, wish I could help, but when you have these fibromyalgia, chronic fatigue type issues it can take a long time to find a doctor who will truly help. Often you find them at the Mayo Clinic or Johns Hopkins, seldom at your local doctor. Peace.