You are approaching this issue from the set point of disbelief. There is nothing wrong with that, but you walked out with the conclusion, I suspect, that you walked in with.

A large part of healing is believing that there is a process that might lead to healing. What heals person X does not heal person Y. The best science has to offer might not help person X heal at all, but pushing down their arm on a given Monday does. The body and soul are weird, not entirely logical things. It sounds to me like you have all your points in "It has to make sense". Live a little longer, rest assured, and it won't.