Poetry and prose are alike in that they are both forms of written communication between writer and reader; both are intended to accomplish a writer's purpose (or sometimes several purposes), and both employ literary techniques. Writers of prose express themselves in sentences, whereas poets write in lines of poetry. Poetry (which may or may not rhyme) employs rhythm to a greater extent than prose, and rhythm in a particular poem may or may not fall into regular patterns.
Readers of poetry and prose enjoy these literary forms for somewhat different reasons, but both forms are enjoyed for the effective use of language. A particular poem might be appreciated for the emotion it evokes in the reader, but the same can be said for a good short story, play, or novel. People who enjoy poetry often love its sound techniques, the rhyme and the rhythm of it. A poem may also offer very vivid imagery within only a few lines creating a strong impact upon the reader.
People who love poetry may favor certain kinds of poems. Some poems (narrative poems) tell a story, while others, like those of the imagists, simply paint a picture. The one common factor in the enjoyment of poetry seems to be this. Those who love poetry love language and what can be achieved with carefully selected words arranged artfully in lines.