I disagree. There is a certain 'tempo' to the piece. I feel that's one of the more important components to the likeability of a thing to me. I don't mean in the sense of how snappy it is, but rather how much I feel it aligns with what I understand at the time and the rate of my mental processing.

Anyway I'm going to try write a rap poem:

I've got abuse on my mind// I can't let it get me down// if I forget to look after myself// this smile will turn into a frown// don't wanna wear psychiatric hospital gowns// don't wanna be the loud and violent clown// down wanna compulsively get down// or get turned down cause i'm brown// labelled with all kinds of nouns// let these flows astound// plant the seeds of happiness in the ground// ya see these mounds?// i'll be out in top soon enough// you won't be seeing me around you negative hounds//

You're completely right.

I know it's possible for me to write well, based on various past examples, I just haven't figured out how to do so reliably.