If you believe that the world and the people in it are products of Intelligent Design, then your Designer did a pretty shitty job.
I’ve got three crushed discs in my back, since the spine was not “designed” to be operated in a vertical position. Likewise, my knees and hips are wore down to bone-on-bone because they were not “designed” to support the entire wieght of my body. And who would “design” a creature with an endoskeleton, and then allow something like arthritis to exist? That’s like Chevy including free rust on every new car.
Why would you “design” teeth to fall out? Or cataracts? Or even toenail fungus?
If a first-year engineering student turned in a design as flawed as a human being, they would not only fail the course, they would probably be asked to leave the school, for being too stupid to ever complete the course.
I find it easier to accept the possibility of travelers from another planet, (or dimension, the future, etc.) than the idea of a supposed omnipotent being, who has the power to create the world and everything in it, but still did such a poor job of it.
Like Gallagher said, “If you bought your body at Sears, you’d take it back.”
I am sorry that you suffer. Ailments and imperfections are all around, yet the miracle of life overshadows all of this. You can spend your life complaining, or you can look at what you have been given, as apposed to what you feel you have not been given.
Lots of Biblical advice and wisdom on the subject of glass half full vs half empty, and God’s real challenge to us as his children being about how we handle the journey, not the destination. I don’t try to proselytize and I am the least qualified to do so, but despite your posted complaints, things could have turned out worse. You wake up every day. What you make of that day is up to you, regardless of your religious belief.
Best regards