As an avid irrationalist and Sith-in-training, I’ll take a stab at your question. Irrationality offers all the things rationality does not: creativity, a sense of “magic”, ecstasy, revelation, cosmic awe, passion and pure psychic power. Who has historically had more influence on human civilization, the irrationalist prophets or the rationalist philosophers? Until there is a rationalist whose power can compare to a Moses, Jesus, Mohammed or even Hitler, I will continue to be skeptical of rationalism. Faith in reason is simply another form of religion, which, taken to its logical conclusion, seems to result in human beings being replaced by machines. Rationalism is a kind of psychological Skynet which seeks to terminate all competing belief systems and reduce the landscape of ideas to logical paperclips. Singularitarians who fear a universe reduced to paperclips are really just projecting the barren state of their own inner landscapes onto the world!
"Irrationality offers all the things rationality does not: creativity, a sense of “magic”, ecstasy, revelation, cosmic awe, passion and pure psychic power"
i think you misunderstand what we mean by rationality. If we wanted these things, which most of us do, then it'd be rational to be irrational. using the words that way is just silly.
If you are already an atheist that does not believe in ghosts, what can you learn from rationality? I'd love to be wrong about lots of things but my problem is, I think I'm right.
As far as I can tell, none of this reflective thinking has lead to deeper understanding of consciousness. (A subject I wish I wasn't so interested in, because its study seems so futile).
If you feel like it, please tell me about any particular instances where actively working on your own thought processes has lead you to realize you were wrong about something (other than blatantly false things like those I mentioned above) or if the same program lead to any new understanding of consciousness.