Rhyme is simply a technique that can be used to create a certain effect in a poem. It can add musicality, emphasis, or a sense of unity to a work. However, it is not essential to the creation of a successful poem.
There are many other ways to create poetry that is beautiful, moving, and thought-provoking. Poets can use a variety of tools, such as imagery, symbolism, metaphor, and rhythm, to achieve their desired effects.
Ultimately, it is up to the individual poet to decide whether or not to use rhyme in their work. There is no right or wrong answer, and the best approach will vary depending on the poem's subject matter and intended audience.