* Musicality and Memorability: Rhymes create a pleasing auditory effect, making the poem more musical and easier to remember. The echoing sounds create a sense of rhythm and flow, making the poem more enjoyable to read aloud. This is particularly important in forms like ballads and sonnets, which rely heavily on a specific rhyme scheme.
* Emphasis and Connection: Rhymes can highlight certain words or phrases, giving them added emphasis. They can also connect seemingly disparate ideas or images, drawing the reader's attention to the relationship between them. The unexpected rhyme can even create a surprising effect, forcing the reader to reconsider the meaning.
* Structure and Form: Rhyme schemes (like AABB, ABAB, etc.) provide a structural framework for the poem, organizing its lines and stanzas. This structure can contribute to the overall sense of order and coherence. Different rhyme schemes contribute to different feelings, for instance, a tightly structured sonnet feels quite different than a looser free verse poem.
* Emotional Impact: Rhymes can contribute to the overall mood and emotional impact of a poem. A light, playful rhyme scheme might suit a humorous poem, while a more somber or complex scheme might be appropriate for a serious or tragic one.
* Creating Internal Unity: Rhymes can help unify seemingly unrelated parts of a poem by linking them through sound. A repeated rhyme throughout a poem can tie together different themes or images, creating a sense of cohesion and completeness.
However, it's crucial to note that rhyme isn't essential for all good poetry. Many modern poets prioritize other elements, such as imagery, rhythm, and meaning, over strict adherence to rhyme. While rhyme can be a powerful tool, it should always serve the poem's overall purpose and not feel forced or artificial.