OH yeah, The Void...
Well, when I get depressed, I use to say I amd beyond consolation. But then I realize that if I didn't have support I would be WORSE.
Yes, the experience of depression's sheer pain leaves bad scars, you are right. I am left with the persistent idea that I had better not be born. I try to menage my life as best as I can, now that the damage is done. Yet I will never have kids
When I have scheduled something pleasant, I hope heartly that depression will not break in to spoil the pleasure.
I suppose tha is what means to have a cronic illness... Like a menacing shadow walking with you.
I don't have much comfort to give you, but you see that you are NOT alone. Many people can relate. Once again, you may think it's no consolation, but once again it is yet better then to suffer alone.

The best of luck, really