Q: How do you know if your story should rhyme?
J: Try it. If it turns out bad, silly, or ugly, or if you have only a limited ability with good, interesting– even startling–rhymes, do not try it. And always…ALWAYS…get someone else to read it aloud to you, and you will know in a moment whether it is working or not.
Most people are fairly good at hearing end rhymes, but many stumble over the in-between. stuff, making it impossible to speak it out loud unless you are the author and have been practicing.