Neuropathy is more common than you think. You are GREATLY overgeneralizing to the point of ignorance by arrogantly assuming that all sources of pain fit the same profile of "something wrong with the body that could be fixed if we knew what it was".
I deal with sciatica that is at times debilitating. I also have fusing disks in my lumbar that cause massive, constant back pain. I often can't sleep for more than 6 hours because the pain becomes too great to remain horizontal.
I know what is wrong with my body. Sciatic surgery is a big financial gamble, not even on my fiscal radar, and don't get me started on lumbar surgery.
So I exercise. I try to stay on top of research in those areas and maybe one day, I may even be wealthy enough to afford adequate healthcare and see specialists. But what on Earth makes you think you have the right to tell me I shouldn't seek healthy ways to manage my pain? What kind of privileged family healthcare plan are you on to have such little empathy towards those in extreme pain who can do little about it?
Be careful about the path that YOU are headed on, my friend. I watched someone become completely caught up in the Paul Chek health cult and they now think every single pain and disease (they like to call it "dis-ease") anyone experiences is their own fault for not taking cold showers and eating expensive designer health food. It was horrifying to watch such an empathetic "people person" become so close-minded and arrogant towards others to the point of losing their friends, thinking they are "helping" these friends by showing them the true path.
You have to accept some people are predisposed to, and more sensitive to, pain and disease and they deserve to enjoy some level of comfort.