Memory, Pain and Wisdom

In my opinion, the reason why the community has only one person who receives memories is that pain is completely personal feelings and nobody can feel the same as others. I mean, you might be able to imagine the pain that you have ever esperienced, but it's not the same one. Therefore the community decides to entrust the task to one person who shows wisdom in order to inherit the wisest one. By the way , I doubt the person who shows wisdom will accept the kind of community.