I was diagnosed 18 years ago as bipolar. I have always thought there is more to it. I still take a small amount of medication but i am planning on taking B vitamins etc while still taking the medication. I will always believe there is an aspect of spiritual growth each time you go through mania or depression. In a perfect world you would be comforted while going through this. How many people in this world actually have a support group in place for this? Anyway, I have grown quite a bit spiritually in my 47 years; I can remember going through depressions and mania. Some of the meds can have harsh side effects - not all - they have helped me quite a bit, even though I hope to be off them someday. Everyone needs to go through it their own way. There is no right or wrong way. It is nice to read these forums and make some decisions on your own.
You don't sound the slightest bit "crazy" to me. You've stated a simple but very profound truth: "There is no right or wrong way." We should all be free to have our own life experience, unless we are threatening the well being of someone else. And just as you say, "there will always be an aspect of spiritual growth in any mania or depression" - I would add that if we could view our whole life as an experience of spiritual growth, we would all be better off for it.