Psychological pain is more severe than physical pain, and you brought up a point that seems good, which is the ability to divide our reward centers or sources well and not consume them excessively because they will not always perform the same way, but on the contrary, their output will diminish or disappear completely.
I have the sense that a lot of our lives would be much easier, if we were better able to distinguish between the different parts of our body and how they function. Our body is all connected, but that doesn't mean it always works well together, or in our best interest.