There is of course free form poetry that doesn't rely on meter or rhyme but is basically a group of short sentences / statements that express a feeling.
You can read about how to best do it and find lots of examples online.
Not my really cup of tea but popular with many.
Narration, at least good narration, has structure and rules that are just as difficult as any poetry.
As Albert mentioned it really depends on what comes most naturally to you.