What you always have to remember is that doctors know nothing about thyroid. They have all sorts of un-proven theories, but as they don't have the disease themselves, and they don't learn about it in med school, they have no real knowledge of how it works.
Also remember that your doctor gets extra points for prescribing things like antidepressants, and antianxiety drugs. He gets nothing for prescribing thyroid hormone. Financially, it's not good business to treat the root cause. And, believe me, it has nothing to do with the patients best interests! The patient has to look after himself! Buyer beware, and all that!
But anybody that actually has antibodies will tell you that they do cause symptoms. Doctors know nothing about symptoms. There has been little research into symptoms. And, basically, they just don't care. They've learnt in med school that all patients are idiots and liars - it would have been more helpful if they'd actually learnt something about the most common diseases - such as thyroid disease - but that's the way of the world these days. It's far easier and less taxing on their tiny brains to blame the patient for everything.
Do I sound like a cynic? Well, actually, I am one. From bitter experience. We're on our own with this one, and we just can't trust our doctors to look after our best interests, or to know anything about our disease. We have to educate ourselves, and be our own advocats. Even if our doctors have the best intentions possible - and my last doctor was like that - they are just too undereducated to be able to help. He didn't even know that women have testosterone!!!
So, check out all the possibilities, know exactly what could go wrong, and what the advantages might be. Learn to read your body. Learn about nutrition - they know nothing about that, either. And do what you have to do to feel well.
Sorry for the rant. lol Just once I got started, I couldn't stop!