I don't want to invalidate your feelings but I've had the opposite experience. I've been chronically depressed and have had multiple stays in psych wards but I'm finally starting to heal. I'm able to experience this pure joy that I haven't felt since I was a little kid. My life is still very difficult but I haven't felt this alive since elementary school.
Both can be true. I have been integrating a lot of different sides of myself and the long work of therapy is finally starting to coalesce into a real results.
But, also, a part of me died during our attempts to have another kid. At some point it just broke me in that dimension. I have doubts that it can be fully healed. It is grief, and it demands space and an outlet sometimes. And it hurts from time to time. It's no longer debilitating, but it is still there.