Pain shapes life. There is no living without it. Living is striving, something that is what we are, before we had self-consciousness. Pain informed us then, of danger, of need. Now we are at odds with our own pain. Our needs aren't always what our bodies think we need, what we need isn't always what THEY tell us we need. This creates profound anxiety.
Anxiety is actually the most painful part of pain. Not the sensation, but the thinking about the sensation. That's why a person can undergo surgery under hypnosis.
I'm not so fast to curse a God who created me, even when I'm in pain. I like existing.