I think the beauty of writing - especially poetry - is the freedom writers have to work with! I always thought of writing as a natural gift, almost something I HAVE to do as an outlet for my thoughts and emotions. I tend to write from the heart and let words flow from me in a natural, unfiltered way. Then, of course, I polish and edit the snot out of my work - I don't think I have EVER produced a finalized write. On the contrary, I always find more editing I could do!!
I absolutely understand the "need" for structured writing styles, as I sometimes worry that my intended flow will not be captured in the freestyle way I write, and I can definitely see how guidelines will help to preserve the writer's desired rhythm. In my humble opinion, though, restricting oneself to a certain format or with specific "rules" is much harder than simply rhyming a bunch of words!
Howeverrrrr.... (haha) since prose is described as "the ordinary form of spoken or written language", I think it's more difficult to rhyme than to simply write in a common manner. The trick here is that it's easier to find rhyming words - especially since there's SUCH an abundance of words to choose from - than it is to make ordinary language sound extraordinary enough to capture an audience!! Since prose and poetry are kind of conflicting terms to begin with, prose seems to be the more difficult of the two when writing.
I know I should shut up now but I just realized that my first poem ever was a simple rhyming poem, and now I feel as if I am more of a rhyming-prose poet... Which I guess supports my reasoning that rhyming is easier since it was my stepping stone into the world of poetry.
That is all! :)