I’ve written exactly one decent poem in my life. I’d post it, but it’s been lost for a long time. Too bad, too, because I am unlikely ever to be quite that distraught again, or at least I hope so. The thing is, poetry is difficult, because each word must carry a great load of meaning. You could put a novel in a phrase, if you’re good at it. As some people, of course, are. Eliot, Pound, Shakespeare, Dylan (first and last name, same to me,) and others. And then there are the rest of us. I suspect that anyone could write good poetry if they were sufficiently motivated. Unfortunately, as poetry rarely pays the bills (Williams Carlos Williams was a physician. Bob Dylan a folk/rock/pop star, to name a couple examples) very few people are motivated by the simple thrill of writing poetry. Even Shakespeare wrote his stuff to pack the house and get juicy roles for himself and his friends. So maybe poetry isn’t such a lucrative career choice, at lest per se?
Well, then, consider picture books. If anything, a picture book is worse than a poem. You have maybe 27 words, maybe a few more or less, to tell a complete story. The stories may seem simple at first glance, but consider the cadence and rhyme of Goodnight Moon. It’s beautiful, and at the end, you know a great deal about the person going to sleep, a great deal about the world that person lives in, and you’ve enjoyed some beautiful words in the learning. It’s right up there with, “I could write a book. I have a word processor” if you think you can just pound out a picture book. (And this ignores the importance of the pictures as well.)
And now consider the full-length novel. Twain wrote that The difference between the almost-right word and the right word is the difference between the lightening bug and the lightening. Do you suppose he checked every word in every book to ensure that each one conveyed just what he meant it to convey? Oh, heck yes he did! And his books have proved to be enduringly popular for a century and a half, so far. He wrote long form prose with the same eye for detail as one needs to write a picture book, or a poem.
Food for thought.