It's funny, because in deference to conventional wisdom, I spent my struggling writer years trying to suppress my naturally baroque literary voice and write clean, spare prose. I finally gave up and embraced my baroque tendencies when I wrote the Kushiel series.
But every great scripture, whether Hebrew, Indian, Persian, or Chinese, apart from its religious value will be found to have some rare and special beauty of its own; and in this respect the original Bible stands very high as a monument of sublime poetry and of artistic prose.
Writing for the page is only one form of writing for the eye. Wherever solemn inscriptions are put up in public places, there is a sense that the site and the occasion demand a form of writing which goes beyond plain informative prose. Each word is so valued that the letters forming it are seen as objects of solemn beauty.
However, if a poem can be reduced to a prose sentence, there can't be much to it.
'At the Gates of the Animal Kingdom' by Amy Hempel showed me the lean quality of prose.
If geography is prose, maps are iconography.
And write what you love - don't feel pressured to write serious prose if what you like is to be funny.
You campaign in poetry. You govern in prose.
If you have a good story idea, don't assume it must form a prose narrative. It may work better as a play, a screenplay or a poem. Be flexible.
Every now and then I read a poem that does touch something in me, but I never turn to poetry for solace or pleasure in the way that I throw myself into prose.