Define human spirituality and I'll tell you if I believe in it.
It can't register with me because you won't say what IT is.
As far as I can see, poetry like prose, like music and song, like painting, like sculpture, like theatre, are art forms through which we communicate. That communication is at its best when the creator can provoke an emotional and/or and empathetic response etc, in the people the creator is trying to engage with.
I agree with your final sentence. But we have good reason to believe that poetry doesn't connect to nearly as many people as it did even forty years ago. How has the communication changed within the art?
Spirituality has a really simple definition when faced with materialism. The entirety of the human experience hasn't been defined in terms of physical forces so there is the possibility of a non-physical element to the human experience. Poetry's sole purpose had been to make contact with and express those feelings and emotions that seem to arise out of that non-physical space. The circularity of the definition shouldn't matter, this isn't a philosophy course, just an explanation for why poetry once mattered and why it might not now.
There is a humanist bent to it too, so me being an atheist I can accept poetry as it was and as it should be. There is a special agency to human beings to want and desire to be creatures greater than themselves, greater than the anthropological, biological descriptions and limitations placed upon them. I would like to express that experience and emotion that I've had that is seemingly inexpressible. Poetry that relies on sound technique such as meter and rhyme, advanced metaphor, special visual arrangement on the page are the most suitable tools.
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